Samsung SRP-350PG Service Manual

Samsung SRP-350PG - SRP 350 B/W Direct Thermal Printer Manual

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  • Samsung SRP-350PG | Service Manual - Page 1
    THERMAL RECEIPT PRINTER SRP-350 Ver.2 Series SRP-350/350S/350P/350U SRP-350G/350SG/350PG/350UG SERVICE Manual THERMAL RECEIT PRINTER CONTENTS 1. Precaution Statements 2. Product Specification 3. Installation and Operation 4. Disassembly and Assembly 5. Maintenance and Adjustment 6. Reference
  • Samsung SRP-350PG | Service Manual - Page 2
    Notes Precaution symbols About Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 3
    About Samsung Electro-Mechanics Copyright Samsung Electro-Mechanics Co., Ltd. Samsung Electro-Mechanics Co., Ltd. SRP-350 April 2001.
  • Samsung SRP-350PG | Service Manual - Page 4
    Overview of this Receipt Printer Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 5
    1 Precaution Statements 1-1 Safety Precautions WARNING : Do not use an isolation transformer during this test Samsung Electro-Mechanics 1-1
  • Samsung SRP-350PG | Service Manual - Page 6
    Precautions WARNING: First read the "Safety Precautions" section of this manual. If some unforeseen circumstance creates a conflict between the servicing and safety precautions, always follow the safety precautions. WARNING: An electrolytic capacitor installed with the wrong polarity might explode
  • Samsung SRP-350PG | Service Manual - Page 7
    1 Precaution Statements Samsung Electro-Mechanics 1-3
  • Samsung SRP-350PG | Service Manual - Page 8
    1 Precaution Statements MEMO 1-4 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 9
    Printer Auto Cutter Power Consumption AC Adapter Environment Condition Weight Dimensions(mm) Description • SRP-350 • SRP-350S • SRP-350P • SRP • Power : Self-Powered • Printing Method • Printing Speed : Thermal Line Printing : 150 mm/Sec, 35.5 Line/Sec (Font A,1/6" Samsung Electro-Mechanics 2-1
  • Samsung SRP-350PG | Service Manual - Page 10
    2 Product Specifications 2-2 Appearance 2-2-1 Printer Dimensions (mm) 145 146 195 Figure 2-1 Printer Dimension 2-2-2 AC Adapter Dimensions (mm) 150mm 51mm 87mm Figure 2-2 AC Adapter Dimension 2-2 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 11
    10 11 ON RS-232 Ver.2 SRP-350/SRP-350S (RS-232C/RS-485) 1. Cover-Open 2. Case-Upper 3. Case-Lower 4. Label-Control 5. Push Button 6. Cover-Cutter 7. Power Switch Samsung Electro-Mech anics 9b 10 11 PARALLEL Ver.2 SRP-350P (PARALLEL) 9c 10 11 Ver.2 USB SRP-350U (USB) 8. Braket Dip Switch
  • Samsung SRP-350PG | Service Manual - Page 12
    Thermal Printer Specifications 2-3-1 Printer Specification Item Description Model • SRP-350 (TPH : KF1803-GF14B - ROHM) Print Method • Thermal Sec (5.9" /Sec) Paper feeding Speed • Approx. 150mm /Sec Table 2-2 Thermal Printer Specification Remark Samsung 2-3-2 Character Specification
  • Samsung SRP-350PG | Service Manual - Page 13
    • Head : 1 108 Pulses / 100Km • Auto Cutter : 1,000,000 Cut MCBF • 37,000,000 Line Environmental Temperature • Operating : 0 ~ +45 • Storage : -10 ~ +50 (Except for Paper) Humidity • 10% ~ 90% RH Table 2-5 Thermal Printer Reliability Specification Remark Samsung Electro-Mechanics 2-5
  • Samsung SRP-350PG | Service Manual - Page 14
    ") Over [All the numeric values are typical] Figure 2-4 Printable Area 2-3-6 TPH(Thermal Printer Head) Specification Item Description Heat Element Structure Number of Heat Element 2 Heaters / At 25 ) : 3950 K 2% : -20 ~ +80 Table 2-6 TPH Specification Remark 2-6 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 15
    Thermal Printer Specification Item Description Auto Cutter Paper Feed Motor Paper End Sensor Paper Roll Near End Sensor • Model : ORC-RUY80 (OHYANE RIKI : 800mA (Average), 1.6A(Peak) • Model : PM35L-048 (NMB) • Type : 4-Phase, 48-Polarity (PM Type Bi-Polar Driver) • Voltage : 24V 10% DC
  • Samsung SRP-350PG | Service Manual - Page 16
    (SMPS) Specification Remark 2-4-2 SMPS Output Connector Pin Number 1 2 3 Shield Signal Name +24 VDC GND N.C Frame GND Table 2-10 Power Connector Pin Description 2 1 3 Figure 2-5 Power Connector 2-8 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 17
    • DB25P Female (I/F PBA) Note: Table2-11 RS-232C Specification 2-5-1-(b) RS-232C I/F Cable 2 Product Specifications Remark XON : ASC Code 11h XOFF : ASC Code 13h PRINTER SIDE D-SUB25P-MALE 10 mm FERRITE CORE : 1 Turn (OP-118E : 18.2 12.5 25.5) Figure 2-6 RS-232C Cable HOST SIDE CONN : USER
  • Samsung SRP-350PG | Service Manual - Page 18
    ) : The Printer is not busy The host transmits a data to the printer, after confirming this signal. When XON/XOFF flow control is selected, the host does not check this signal. Table 2-12 RS-232C Pin Description Note : Refer to the Operation Manual about the busy condition. 2-10 Samsung Electro
  • Samsung SRP-350PG | Service Manual - Page 19
    / Even / Odd • DB25P Female (I/F PBA) 0.2V 0.2V Note: Table2-13 RS-485 Specification 2-5-2-(b) RS-485 I/F Cable Remark XON : ASC Code 11h XOFF : ASC Code 13h Samsung Electro-Mechanics 2-11
  • Samsung SRP-350PG | Service Manual - Page 20
    2 Product Specifications 2-5 Interface Specifications 2-5-2-(c) Cable Connection PRINTER SIDE (S.G) 1,7 (SD2) 2 (SD1) 3 (RD2) 4 (RD1) 5 printer is BUSY or READY. (H/W flow control) DR1 > DR2 (H) : The printer is BUSY. DR1 < DR2 (L) : The printer . The printer transmits a data to the host, after
  • Samsung SRP-350PG | Service Manual - Page 21
    • 8-Bit Parallel • External supplied nStrobe signals • nACK and Busy signals • TTL compatiable • Centronics 36P Table 2-15 IEEE1284 Specification 2-5-3-(b) Reverse Mode Specification (Nibble/Byte mode) Remark Samsung Electro-Mechanics 2-13
  • Samsung SRP-350PG | Service Manual - Page 22
    Printer +5V ND 36 Host NselectIn 1284-Active Table 2-16 IEEE1284 Pin Descirption Byte Mode HostClk Data 0 (LSB) Data 1 Data 2 Data 3 Data 4 Data 5 Data 6 Data 7 (MSB) PtrClk PtrBusy AckDataReq Xflag HostBusy ND GND FG Logic-H GND nInit nDataAvail ND ND ND 1284-Active 2-14 Samsung Electro
  • Samsung SRP-350PG | Service Manual - Page 23
    : 0.8 ~ 2.5[V] • Single-End Receiver Threshold : 0.8 ~ 2.0[V] Speed • 12 Mbps Power • Self-Powered Cable & Connector • Cable • Connector : 5m / 2m : B Type Other • Support USB SPEC V1.1 Table2-17 USB Specification PRINTER SIDE Centronics 36P Remark Samsung Electro-Mechanics 2-15
  • Samsung SRP-350PG | Service Manual - Page 24
    Host Power : DC5[V] / 500[mA] Differential Data Line Differential Data Line Signal Ground Table 2-18 USB Pin Description 2-5-4-(c) USB I/F Cable Figure 2-10 USB Cable 2-16 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 25
    25.5) Figure 2-11 Drawer Cable 2-6-2 Cable Connection Pin no. Description 1 • Frame GND 2 • Drawer Kick-Out Driver Signal #1 3 • Drawer Open / Close Signal 4 • +24V 5 • Drawer Kick-Out Driver Signal #2 6 • Signal GND Table 2-19 Drawer Cable Connection Direction Output Input Output
  • Samsung SRP-350PG | Service Manual - Page 26
    2 Product Specifications MEMO 2-18 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 27
    sides of the connector. 4. Turn on the printer, host ECR and computer. Figure3-4 Paper Roll Installation 1. Open the cover printer and remove the used paper rol core if there is one. 2. Load the paper roll on the paper holder as shown. 3. Close the cover printer. Samsung Electro-Mechanics 3-1
  • Samsung SRP-350PG | Service Manual - Page 28
    cover, insert the Wall-Guide L , R to the UpperLeft Hole and the Upper-Right Hole inside of the printer (Figure3-5). 2. Remove height will be 7~10[mm] when pressing the Push Button. If no problem Re-assemble in the reverse order. 6. After assembling the Case-Lower to #1 3-2 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 29
    Installation (Continue) 3 Installation and Operation Shaft Grease Plate spring Figure 3-6 Wall Mount #3 Figure 3-7 Wall Mount #4 Figure 3-8 Wall Mount #5 Figure 3-9 Wall Mount #6 Figure 3-10 Wall Mount #7 Samsung Electro-Mechanics Figure 3-11 Wall Mount #8 3-3
  • Samsung SRP-350PG | Service Manual - Page 30
    The new setting takes effect when you turn on the printer. ON 9A 1 2 3 4 5 6 7 8 ON 9A 1 2 3 4 5 6 7 8 Note : Always change DIP switch settings only when the printer is turned off. Change made with the power on OFF Table 3-2 Baud Rate Selection SW1 - 8 ON ON OFF OFF 3-4 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 31
    Refer to the Following Table Reserved - - Reserved - - Table 3-6 DIP switch Setting 2 Function DEFAULT OFF OFF OFF OFF OFF OFF OFF OFF DEFAULT OFF - OFF OFF - Samsung Electro-Mechanics 3-5
  • Samsung SRP-350PG | Service Manual - Page 32
    ver 2. Turn on the printer, while holding down the FEED button. 3. Close the cover, then the printer enters the hexadecimal dump mode. 1B 21 00 1B 26 02 40 40 02 0D 1B 44 0A 14 1E 28 00 01 0A 41 0D 42 0A 43 D A . B . C 3-2-5 The Self Test Mode 3-6 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 33
    56789:;?ABCDEFGHIJKL MNOPQRST TUVWXYZ[\] ~ RSTUVW XYZ[\]^_'abcdefghijklmnopqrstuvwxyz{ *** COMPLETED *** SRP-350 VER 1.00 1999.11.09 Parallel (IEEE1284) Interface EPSON EMULATION Self-Test Sheet (B) Parallel Self-Test Sheet Figure 3-7 The Self-Test Sheet Samsung Electro-Mechanics 3-7
  • Samsung SRP-350PG | Service Manual - Page 34
    3 Installation and Operation MEMO 3-8 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 35
    4 Foot Rubber 3 Case Lower 1. Remove the three screws 1 . 2. Sparate the BRKT DIP Switch 2 , the Case- Lower 3 and the Foot-Rubber 4 from the printer. Figure 4-1 Disassembly Case-Lower #1 1. Remove the connector wires from main PBA and sub assembly. Main Pcb Figure 4-2 Disassembly Case-Lower
  • Samsung SRP-350PG | Service Manual - Page 36
    Main PBA 6 from the BRKT PCB 2 . Figure 4-3 Disassembly Case-Lower #3 1 Case Lower 1. Separate the Cover-Cable 2 from the CaseLower 1 . 2 Cover Cabel Figure 4-4 Disassembly Case-Lower #4 4-2 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 37
    1 . 2. Lift the Case-Upper in the direction of an arrow 3 during pushing the Push-Button 2 . 3. Remove the three screws 4 . 4. Separate the Manual-Cutter 5 from the Case-Upper 6 . 4 Screw (3x4) 5 Manual Cutter 2 Push Button Figure 4-6 Disassembly Case-Upper #2 Samsung Electro-Mechanics 4-3
  • Samsung SRP-350PG | Service Manual - Page 38
    4-7 Disassembly Case-Upper #3 1 Spring Hook 2 1. Remove the Spring Hook 1 . 2. Remove the two screws 2 3 . 3. Separate the BRKT-Hook 4 . 4 Brkt-Hook 3 Screw (3x4.4) Figure 4-8 Disassembly Case-Upper #4 4-4 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 39
    the Cutter-Blade 5 from the Fixed- Cutter 2 . 5. Remove the two screws 6 . 6. Separate the Cover-Plate 7 from the Cover- Housing 3 . 6 Screw (3x6) Figure 4-9 Disassembly Case-Upper #5 Samsung Electro-Mechanics 4-5
  • Samsung SRP-350PG | Service Manual - Page 40
    Frame #1 1. Remove the screws 1 . 2. Push the Heat-Sink Assembly 2 in the direction of an arrow and separate it. 1 Screw 2 Heatsink Assy Figure 4-11 Disassembly Frame #2 4-6 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 41
    screws 1 . 2. Separate the Frame-Main 2 from the BRKT PCB 3 . 3. Separate the Power-Switch 4 from the BRKT PCB 3 . 3 Brkt PCB 4 Power Switch Figure 4-13 Disassembly Frame #4 Samsung Electro-Mechanics 4-7
  • Samsung SRP-350PG | Service Manual - Page 42
    PCB 10 Guide Button 1 paper End 3 (2PCS). 4. Separate the Sub-Board 5 (2PCS). 5. Remove the Washer slip 6 . And Separate the Gear - Idle 7 from the Frame Main 1 . 6. Remove the two Screw 8 . And Separate the Motor STEP 9 from the Frame -Main 1 . Figure 4-15 Disassembly Frame #6 4-8 Samsung
  • Samsung SRP-350PG | Service Manual - Page 43
    the Paper Near End Sensor Note : For your r eference, this shows the diameter at which the near-end sensor is triggered. Note that this figur e is a calculated value, and there may be some variations depending on the printer. Figure 5-2 Paper Remaining Amount for Paper Spool Diameter Samsung
  • Samsung SRP-350PG | Service Manual - Page 44
    will beep. If the cover-open can be opened, open the cover-open and remove the paper. If the cover-open can not be opened, follow the below. 1. Open the auto beep stops. 3. Close the auto cutter cover. 4. Pull up the roll paper cover by hand. Figure 5-3 Paper Jam Samsung Electro-Mechanics 5-3
  • Samsung SRP-350PG | Service Manual - Page 45
    circuit board Connector Base Heat sensitive layer Electrode Resistor Board Protective layer Figure5-4 Cleaning the Printer Head Note : Never touch the thermal element with your hand. Doing so can damage the thermal element. Note : Do not scratch the Printer Head. 5-4 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 46
    .3 A2/P2.2 A1/P2.1 A0/P2.0 /INT5/D15/P1.7 /INT4/D14/P1.6 /INT3/D13/P1.5 D12/P1.4 D11/P1.3 D10/P1.2 D9/P1.1 D8/P1.0 Samsung Electro-Mechanics P7.0/TXD2/SDA/TA0OUT P7.1/RXD2/SCL/TA0IN/TB5IN P7.2/CLK2/TA1OUT/V P7.3/CTS2/RTS2/TA1IN/V P7.4/TA2OUT/W P7.5/TA2IN/W P7.6/TA3OUT P7
  • Samsung SRP-350PG | Service Manual - Page 47
    Data 4 Data 3 Data 2 Data 1 Data 0 Thermal Temperature ADC Voltage Parallel Busy Auto Cutter Sensing S/W Cover Sensing S/W Near End Sensing S/W Paper Feed S/W Paper End Sensing S/W Ground Drawer Compulsory Sensing S/W AD Reference Voltage In In In In In In In In In In 6-2 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 48
    9 48 Function Data 2 Data 10 Data 3 Data 11 VCC Data 4 Data 12 Data 5 Data 13 Data 6 Data 14 Data 7 Data 15 VSS /BYTE Address 16 Samsung Electro-Mechanics 6-3
  • Samsung SRP-350PG | Service Manual - Page 49
    GND A MAX488 B Z Y M51953B Voltage Detect System Reset IC OUTPUT DELAY CATACITOR GND N.C SUPPLY VOLYAGE INPUT DI H L MAX488 DRIVER OPERATION Y Z H L L H MAX488 RECEIVER DIFFERENTIAL INPUT A-B VID 0.2 V -0.2 V < VID < 0.2 V VID -0.2 V OUTPUT RO H ? L 6-4 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 50
    OUT B PULSE TIME VS GND GND VSS IN1 PHASE ST TEA3718 SENSE OUT A VS GND GND REFERENCE COMP_INPUT INB TEA3718 DRIVER TRUTH TABLE IN1 IN2 H H CURRENT NO CURRENT REMARK L H LOW CURRENT H L MEDIUM CURRENT L L MAXIUM CURRENT USB Controller : USBN9602 Samsung Electro-Mechanics 6-5
  • Samsung SRP-350PG | Service Manual - Page 51
    D560 FET IRFR9024 1: Base 2: Collector 3: Emitter DIODE MMBD6050L 3 1 2 1:Anode 2: N.C 3: Cathode 3 1 2 1: Drain 2: Gate 3: Source OSCILLATOR 16[MHz] 4 3 16.00MHz 1 2 1:X1 2: N.C 3: N.C 4: X2 TR MMBT2222 3 1 2 1:Base 2: Emitter 3: Collector 6-6 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 52
    VOLTAGE DESCRIPTION VDR (+24VDC) Cash Drawer Solenoid Driving / Step Motor Voltage VCC (+5VDC) Logic IC Driving Voltage VTPH (+24VDC) Thermal Printer Head(TPH) Voltage Table 7-1 Power Source Voltage Descriptions 7-1-1 Drawer Driving and Feed, Auto Cutter Motor Voltage : +24Vdc 7-1-2 Logic
  • Samsung SRP-350PG | Service Manual - Page 53
    7 Special Circuit Descriptions 7-2 RESET Circuit RESET CHIP M51953B CPU RESET OUT FLASH RAM Figure 7-2 Reset Block Diagram Power-On Vcc /RESET 45ms Power-Off 4.3V Figure 7-3 Reset Waveform 7-2 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 54
    resistance is more than 20Ω CPU DWR1 / 2 DRAWER DRIVING CIRCUIT +24V SOLENOID DWR_COMP1 +5V 0V +24V 0V 70ms COMPULSORY [DRAWER] Figure 7-5 Cash Drawer Block Diagram Samsung Electro-Mechanics 7-3
  • Samsung SRP-350PG | Service Manual - Page 55
    (OUT) C1 (IN) C2 (IN) C3 (IN) I/F SEL is executed only one time after RESET. C1,C2,C3 = H,L,L IEEE1284 PBA Table 7-6 I/F PBA Detector Block Diagram 7-4 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 56
    7-4 RS-232C Communication Block Diagram 7 Special Circuit Description CPU M30624FPFG TXD,RXD,DTR.DSR MAX232 DRIVER D-SUB25 FEMALE Figure 7-7 RS-232C Communication Block Diagram TRANSMIT (PRINTER) PC(HOST) DTR( ) HOST BUSY RXD( ) HOST NOT BUSY PRT transmits a data HOST BUSY DSR TXD
  • Samsung SRP-350PG | Service Manual - Page 57
    DR1 DR2 CS1 CS1 RS-485 I/F BOARD TRANSMIT (PRI NTER) DATA SD1 SD2 RECEIVE (PRINTER) RD1 RD2 Figure 7-9 RS-485 Communication Block Diagram Transmission a data (1 Byte) "H" Level Gnd Gnd (+)Level (5V) (+)Level (5V) Received data (1 Byte) Figure 7-10 RS-485 Waveform 7-6 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 58
    7-6 Parallel Communication Block Diagram 7 Special Circuit Description CPU M30624FGFP Data[7:0] 74HC574 DRIVER 74HC574 DRIVER INT CONTROL Table 7-11 IEEE-1284 Communication Block Diagram Samsung Electro-Mechanics 7-7
  • Samsung SRP-350PG | Service Manual - Page 59
    7 Special Circuit Descriptions 7-7 USB Communication Block Diagram Data[7:0] CPU M30624FGFP USBN9602 Controller CLOCK 48[MHz] B Type Table 7-12 USB Communication Block Diagram 7-8 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 60
    checks No.5~8 of DIP S/W#1. R3 checks No.1~4 of DIP S/W#2. R4 checks No.5~8 of DIP S/W#2. DIP S/W1 No.1 is ON. Figure 7-13 DIP Switch Block Diagram Samsung Electro-Mechanics 7-9
  • Samsung SRP-350PG | Service Manual - Page 61
    DOTs/STB SRP-350 Strobe Processing 256 The content of data is same. 256 Table 7-3 Printer Head Strobe Processing /STB1 CPU M30624FGFP /STB2 /LATCH CLK DATA Printer Line Strobe Circuit Latch Register Shift Register #1 Shift Register #2 THERMAL PRINTER Figure 7-14 Thermal Printer Block
  • Samsung SRP-350PG | Service Manual - Page 62
    7-9 Thermal Printer Circuit 7 Special Circuit Description CLK DATA#1,2 256 CLK 256 Bits 256 Bits 256 Bits LATCH STB1 STB2 shorted on Main PCB. So, the Data(256 Bits) are stored in both Shift Register #1 and #2. Table 7-15 Thermal Printer Timing Waveform Samsung Electro-Mechanics 7-11
  • Samsung SRP-350PG | Service Manual - Page 63
    7 Special Circuit Descriptions MEMO 7-12 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 64
    ≤4 [Description] Transmits the selected printer status specified by n in real-time, according to the following parameters : n = 1 : Transmit printer status. n = 2 : Transmit off-line status. n = 3 : Transmit error status. n = 4 : Transmit paper roll sensor status. Samsung Electro-Mechanics 8-1
  • Samsung SRP-350PG | Service Manual - Page 65
    1 : Printer status Bit Paper near-end is detected by the paper roll Near-END sensor. 4 On 10 16 Not used. Fixed to On. 5 Off 00 0 Paper roll-end sensor : Paper present. 6 On 60 96 Paper roll end detected by paper roll-end sensor. 7 Off 00 0 Not used. Fixed to Off. 8-2 Samsung
  • Samsung SRP-350PG | Service Manual - Page 66
    Command DLE ENQ n [Name] Real-time request to printer. [Format] ASCII DLE ENQ n Hex 10 05 n Decimal 16 5 n [Range] 1 ≤n ≤2 [Description] Recovers from an error the line to the print position is [(nL + nH ×256) ×(vertical or horizontal notion unit)] inches. Samsung Electro-Mechanics 8-3
  • Samsung SRP-350PG | Service Manual - Page 67
    on the following values of n : n 0, 48 1, 49 2, 50 Function Turns off underline mode. Turns on underline mode (1-dot thick). Turns on underline mode (2-dot thick). 8-4 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 68
    follows : Bit Off/On Hex Decimal 0 Off 00 0 On 01 1 1-7 - - - Function Printer Disabled. Printer Disabled. Undefined. ESC ? n [Name] [Format] [Range] [Description] Cancel user-defined characters. the total number of horizontal tab positions to be set. Samsung Electro-Mechanics 8-5
  • Samsung SRP-350PG | Service Manual - Page 69
    Decimal 27 74 n 0 ≤n ≤255 Prints the data in the print buffer and feeds the paper [n X vertical or horizontal motion unit] inches. ESC L [Name] [Format] [Description] 49 Character font A (12 ×24) selected. Character font B (9 ×17) selected. Function Command 8-6 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 70
    90°clockwise rotation mode on/off. n is used as follows : n 0, 48 1, 49 Function Turn off 90°clockwise rotation mode. Turn on 90°clockwise rotation mode. ←←←←C D→→→→ Samsung Electro-Mechanics 8-7
  • Samsung SRP-350PG | Service Manual - Page 71
    Paper roll near-end sensor disable. Paper roll near-end sensor enable. Paper roll near-end sensor disable. Paper roll near-end sensor enable. Paper roll end sensor disable. Paper roll end sensor enable. Paper roll end sensor disable. Paper roll end sensor enable. Undefined. 8-8 Samsung Electro
  • Samsung SRP-350PG | Service Manual - Page 72
    00 On 02 2-7 - - Decimal 0 1 0 2 - Function Paper roll end sensor disable. Paper roll end sensor enable. Paper roll end sensor disable. Paper roll end sensor enable. Undefined. ESC c 5 n [Name] [ Drawer kick-out connector pin 2 Drawer kick-out connector pin 5 Samsung Electro-Mechanics 8-9
  • Samsung SRP-350PG | Service Manual - Page 73
    Density (DPI) 180 90 180 90 * n is the number of the NV bit image (defined using the FS q command). * m specifies the bit image mode. 8-10 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 74
    position for buffer character data in page mode. * This command sets the absolute print position to [(nL + nH ×256) ×(vertical or horizontal motion unit)] inches. Samsung Electro-Mechanics 8-11
  • Samsung SRP-350PG | Service Manual - Page 75
    d1...d(x ×y ×8) [Range] 1 ≤x ≤255, 1 ≤y ≤48 x x y ≤1536, 0 ≤d ≤255 [Description] Defines a downloaded bit image using the dots specified by x and y. * x indicates the number of dots in the horizontal direction code. * HRI indicates Human Readable Interpretation. 8-12 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 76
    printer ID specified by n as follows : n 1, 49 2, 50 3, 51 Printer ID Printer model ID Type ID ROM version ID Specification SRP-350 m n [Name] [Format] Select cut mode and cut paper. ① ASCII GS V m Hex 1D 56 m Decimal 29 a mode for cutting paper and executes paper cutting. The value of
  • Samsung SRP-350PG | Service Manual - Page 77
    LSB of m = 1 : After waiting for the period specified by t, the PAPER OUT LED indicators blink and the printer waits for the FEED button to be pressed. After the button is pressed, the printer executes the macro once. The printer repeats the operation r times. 8-14 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 78
    time la between data reception and status transmission. * When the printer is disabled by ESC= (Select peripheral device), the four is open. Paper is not being fed by using the PAPER FEED button. Paper is being fed by using the PAPER FEED button. Not used. Fixed to Off. Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 79
    Second byte (printer information) Bit Off/On Hex Decimal Status for ASB 0 - - Paper roll Near-END sensor : paper adequate. Paper roll Near-END sensor : paper near end. Paper roll end sensor : paper present. Paper roll end sensor : paper not B (9 ×17) Command 8-16 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 80
    0 ≤d ≤127 GS r n [Name] [Format] [Range] [Description] Transmit status. ASCII GS V n Hex 1D 72 n Decimal 29 114 n n = 1, 2, 49, 50 Transmits the status specified by n as follows. Samsung Electro-Mechanics 8-17
  • Samsung SRP-350PG | Service Manual - Page 81
    -level bar codes are as follows : UPC-A, UPC-E, JAN13(EAN13), JAN8(EAN8), CODE93, CODE128. * Binary-level bar codes are as follows : CODE39, ITF, CODABAR. 8-18 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 82
    This chapter describes the methods for troubleshooting in this Receipt Printer. 9-1 Power Problem Power Problem Power Out N Ok? On SMPS Y 1. Check the Input/Output Power Cable 2. Replace 2. Check the related Circuit & Pattern 3. Check the generated Frequency End Samsung Electro-Mechanics 9-1
  • Samsung SRP-350PG | Service Manual - Page 83
    9 Troubleshooting 9-2 System Problem System Problem Reset Signal Ok? Y Clock Signal Ok? Y Program Ok? Y N 1. Check the Addr/Data Line Pattern 2. Check the related Circuit & Pattern on PCB 3. Program downLoad again N 1. Check the/CS Signal 2. Check the SRAM 3. Check the Addr/Data Pattern CPU Ok?
  • Samsung SRP-350PG | Service Manual - Page 84
    9-3 Panel PBA and Sensor Problem 9 Troubleshooting Panel PBA Problem LED Ok? Y Feed S/W Ok? Y Cover Open Sensor Ok? Y End Sensor Problem N 1. Check the LED Signal from CPU on Main PBA 2. Check the Harness(Signal, VCC, GND) 3. Check the related Circuit, Pattern & Component 4. Replace the Panel
  • Samsung SRP-350PG | Service Manual - Page 85
    9 Troubleshooting 9-4 Thermal Printer and Feed Motor Problem Thermal Printer Problem Control Signal N Ok? Y 1. Check the Control Signal on CPU (Data/CLK/Latch/Strobe1,Strobe2) 2. Check the Harness 3. Check the related Circuit & Pattern Power Vcc VTPH Ok? Y End N 1. Refer to the Power Problem
  • Samsung SRP-350PG | Service Manual - Page 86
    9-5 Auto Cutter and Drawer Problem 9 Troubleshooting Auto Cutter Problem Auto Cutter Ok? Y Auto Cutter S/W Ok? Y End Drawer Problem N 1. Check the Signal on CPU 2. Check the Output Signal the Compulsory Harness & Connector 2. Check the Micro switch in the Drawer Samsung Electro-Mechanics 9-5
  • Samsung SRP-350PG | Service Manual - Page 87
    9 Troubleshooting 9-6 DIP S/W and I/F PBA Select Problem DIP S/W Problem DIP S/W Input Ok? Y N 1. Check the Output Signal(DIP R1~4) 2. Check the Diode(D7~D22) 3. Check the Input Signal(DIP C1~C4) 4. Check the related Circuit & Pattern End I/F PBA Select Problem I/F PBA Select Ok? Y N 1. Check
  • Samsung SRP-350PG | Service Manual - Page 88
    9-7 RS-232C Serial Communication Problem 9 Troubleshooting RS-232C Problem Communication Y Failure? N 1. Check the connection of the RS-232C Connector and Other side 2. Check the I/F Cable whether it is open or short 3. Confirm the H/W handshaking Protocol End Samsung Electro-Mechanics 9-7
  • Samsung SRP-350PG | Service Manual - Page 89
    9 Troubleshooting 9-8 RS-485 Serial Communication Problem RS-485 Problem Communication Y Failure? N 1. Check the connection of the RS-485 Connector and Other side 2. Check short 3. Confirm the H/W handshaking Protocol 4. Check the Voltage Level of each Line End 9-8 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 90
    9-9 IEEE-1284 Parallel Communication Problem 9 Troubleshooting IEEE1284 Problem Froward Mode Y Failure? N 1. Check the Control Line(CS3) 2. Check the 1284 Control Line and Status Line it is open or shortl 5. Check the related Circuit and Pattern on I/F PBA End Samsung Electro-Mechanics 9-9
  • Samsung SRP-350PG | Service Manual - Page 91
    9 Troubleshooting 9-10 USB Communication Problem USB Problem Main PBA I/F Y Failure? N 1. Check the Control Line & Signal(CS3, RD, WR, INT) 2. Check the Data Line & Signal 3. Check whether it is open or short 5. Check the related Circuit and Pattern on I/F PBA 9-10 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 92
    28 19 37 38 29 36 28 39 24 35 34 33 3 23 23 22 23 22 1 2 5 4 6 7 C. ASS'Y CASE-LOWER 15 16 1 86mm 8 46mm 17 SAMSUNG 9 45mm 19 11 10 51mm 10 12 21 18 20 13 14
  • Samsung SRP-350PG | Service Manual - Page 93
    00013D SPRING-TENSHION;SRP-350,SUS304-WPA JE68-00109T LABEL(R)-WARNING,350,TETRON,T0.175,SILVER JE68-00115C LABEL(P)-WARNING COVER,TETRON,T0.05,SIL JE70-00287E IPR-COVER PLATE;SRP-350,SPCC,-,T1.0,NI 6002-000315 SCREW-TAPPING;PH,+,2,M3,L4,ZPC(YEL), JE70-00290E IPR-MANUAL CUTTER;SRP-350,SUS301,T0
  • Samsung SRP-350PG | Service Manual - Page 94
    GUIDE BUTTON;SRP-350,-,HIPS,BLACK,V0 36 JE61-00013E SPRING-RELEASE;SRP-350,SWP,5.5,5,31. 37 JE39-00053M CBF HARNESS-LED,1061,1.30MM,150MM 38 AP04-00005A ASS'Y-PBA PAPER GRAY Serviceable Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Samsung Electro-
  • Samsung SRP-350PG | Service Manual - Page 95
    (YEL) 15 JE70-00290L IPR-BRKT MOUNT;SRP-350,SECC,T1.0 16 6002-000171 SCREW-TAPTITE;M4,L10,ZPC(YEL) JE68-00122A LABEL-LOGO,TETRON,T0.05,W35,L8,IVORY 17 JE68-00122B LABEL-LOGO,TETRON,T0.05,W35,L8,IVORY 18 JF01-000070 POWER COVER MANUAL JE72-00229B PMO-POWER COVER,ABS V0,IVORY
  • Samsung SRP-350PG | Service Manual - Page 96
    LINE CORD,POWER,250MM,BLK 7 JE39-00059D CBF LINE CORD,POWER,250MM,BLK 10 Exploded Views and Parts List Q'TY 1 1 1 1 1 1 1 1 1 REMARK EUROPE U.S.A U.K CHINESE AUSTRALIA AFRICA Serviceable Y Y Y Y Y Y Y Y Y Samsung Electro-Mechanics 10-5
  • Samsung SRP-350PG | Service Manual - Page 97
    11 PCB Layout and Parts List 11-1 Main PCB Layout 11-1-1 Component Side Samsung Electro-Mechanics 11-1
  • Samsung SRP-350PG | Service Manual - Page 98
    11 PCB Layout and Parts List 11-1 Main PCB Layout 11-1-1 Component Side 11-2 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 99
    11-1 Main PCB Layout 11-1-2 Solder Side 11 PCB Layout and Parts List Samsung Electro-Mechanics 11-3
  • Samsung SRP-350PG | Service Manual - Page 100
    11 PCB Layout and Parts List 11-1 Main PCB Layout 11-1-2 Solder Side 11-4 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 101
    Parts List 11-1-3 Parts List (Manual) CODE NO DESCRIPTION / SPECIFICATION AP04-00030B PBA MAIN+LED PANEL+SENSOR Ass'y SRP-350,STD/KOR 0402-000168 DIODE-RECTIFIER;1N5822,40V,3A,DO-201 0503-000117 TR-DARLINGTON;2SD560-R,NPN,1.5W,TO-2 1003-001102 IC-MOTOR DRIVER;TEA3718DP,DIP,16P,30 1003-001118
  • Samsung SRP-350PG | Service Manual - Page 102
    -001159 IC-MICROCOMPUTER;30624,16BIT,QFP,100 JE68-00113C LABEL(P)-BLANK,SL-1050V,ART,140,280,100G 1106-000131 IC -001020 FREQ-ATTENUATOR;5-80MHz,15dB,-,0.03W K304-00006A PCB-MINI PRINTER;SRP-350,FR-4,2L,-,T Q'TY REMARK Serviceable 18 D22,D21,D20,D4,D5,D7,D8D19,D14,D13, Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 103
    5mm,STR CBF HARNESS-P-END SENSOR;SRP-350,UL1 ASS'Y-PBA NEAR UP SENSOR ,STR ASS'Y-PBA PAPER END SENSOR PHOTO-INTERRUPTER;TR,-, Manual or Auto A M A A A M M M A A A M M A A M M M Serviceable Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y A Y A Y A Y M Y M Y M Y Y M Y A Y A Y M Y Samsung
  • Samsung SRP-350PG | Service Manual - Page 104
    11 PCB Layout and Parts List 11-2 RS-232C Serial I/F PCB Layout 11-2-1 Component and Solder Side (New) 11-8 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 105
    34P,FEMALE,ANGLE,AU 6021-000222 NUT-HEXAGON JE41-00467C PCB-RS232 SRP-350,FR-4,80*40 JE70-00290D IPR-BRKT RS232 SRP-270/350 Q'TY 1 1 1 6 4 1 4 1 1 1 2 1 1 REMARK D1 U1 C10 C11 C2C3C4C5 C6 C7 C8 C9 C1 L1 L2 L3 L4 CN2 SW1 CN1 Serviceable Y Y Y Y Y Y Y Y Y Y Y N Y Samsung Electro-Mechanics 11-9
  • Samsung SRP-350PG | Service Manual - Page 106
    JE75-00018F RS-232 0401-001003 DIODE-SWITCHING SUB-PBA,270/350 1006-000133 IC-FRIVER/RECEIVER 232,SOP,16P,150MIL 2203-000192 FEMALE,ANGLE,AU 6021-000222 NUT-HEXAGON JE41-00467C PCB-RS232 SRP-350,FR-4,80*40 JE70-00290D IPR-BRKT RS232 SRP-270/350 Q'TY REMARK 1 1 D1 1 U1 2 C10 C11
  • Samsung SRP-350PG | Service Manual - Page 107
    34P,FEMALE,ANGLE,AUF 1 CN1 JE41-00467D PCB PCB-RS485,FR-4 1 6021-000222 NUT-HEXAGON 2C,M3,ZPC(YEL),SM20C 2 JE70-00290C IPR-BRKT RS232 1 Serviceable Y Y Y Y Y Y Y Y Y Y N Y Y Samsung Electro-Mechanics 11-11
  • Samsung SRP-350PG | Service Manual - Page 108
    11 PCB Layout and Parts List 11-4 IEEE 1284 Parallel I/F PCB 11-4-1 Component and Solder Side (New) 11-12 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 109
    60ohm CONNECTOR-RIBBON CONNECTOR-RIBBON 34P,FEMALE,ANGLE SCREW M3X8 PCB-IEEE1284 SRP-350,FR-4,T1.6 IPR-BRKT PARALLEL IEEE1284 Samsung Electro-Mechanics Q'TY 1 1 1 1 1 2 1 1 1 2 1 3 5 9 10 1 3 1 1 1 1 2 1 1 REMARK Serviceable Y D1 Y D2 Y U3 Y U1 Y U4,U5 Y U6 Y R4 Y R3 Y RA1 RA2
  • Samsung SRP-350PG | Service Manual - Page 110
    RIBBON 3702-001125 CONNECTOR-RIBBON 34P,FEMALE,ANGLE 6001-000568 SCREW M3X8 JE41-00469A PCB-IEEE1284 SRP-350,FR-4,T1.6 JE70-00290B IPR-BRKT PARALLEL IEEE1284 Q'TY REMARK 1 1 D1 1 D2 1 CN2 1 CN1 2 1 1 Serviceable Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y N Y 11-14 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 111
    C21 C22 2 C23 C24 1 C25 1 C35 2 C2 C3 1 C1 1 L11 1 OSC1 6 L2 L3 L4 L5 L6 L7 3 L8 L9 L10 2 L12 L13 1 CN1 1 CN2 1 U1 1 1 2 Serviceable Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y N Y Y Samsung Electro-Mechanics 11-15
  • Samsung SRP-350PG | Service Manual - Page 112
    DRIVER RS-485 DRIVER IEEE1284 DRIVER USB DRIVER RS-232C CONNECTOR RS-485 CONNECTOR PARALLEL CONNECTOR USB CONNECTOR SENSOR CIRCUIT AUTO CUTTER DRIVER THERMAL HEAD PAPER FEED MOTOR LED & BOTTON CIRCUIT P_END & NEAR SENSOR AUTO CUTTER A_CUT SENSOR THERMAL HEAD PAPER FEED MOTOR PANEL BOARD Samsung
  • Samsung SRP-350PG | Service Manual - Page 113
    12 Block Diagram MEMO 12-2 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 114
    SRP-350 / SRP-350S / SRP-350P / SRP 18 CN7 CN8 123456 CN1 CN2 PANEL PBA 7 GND 6 GND 5 COVER SENSOR 4 FEED S/W 3 PAPER LED 2 ERROR LED 1 VCC 7 6 5 4 CN10 3 2 1 P_END SENSOR 3 GND 2 PRINTER MECHANISM AUTO CUTTER FEED MOTOR CN4 CN4 POWER SWITCH COVER SENSOR Samsung Electro-Mechanics 13-1
  • Samsung SRP-350PG | Service Manual - Page 115
    13 Wiring Diagram MEMO 13-2 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 116
    14-1 Samsung Electro-Mechanics 14 Schematic Diagrams 14-1 Main Circuit Diagrams C214 10nF C213 100nF R228 10K +5V D(0:7) +5V C211 C212 10nF 100nF A(0:19) 32 7 21 D7
  • Samsung SRP-350PG | Service Manual - Page 117
    Samsung Electro-Mechanics CN4 5267-02A 1 CN2 MDJ-401-3P 1 2 5 IN GND 4 MC34063A R227 36K R226 12K ON_OFF R215 4.7K 1 3 Q3 MMBT2222ALT1 2 C210 220pF D6 L1 +5V 1N5822 ER-350 L5 C5 470uF 16V C208 100nF R214 4.7K 14 Schematic Diagrams ED EDIT 1 2 3 SIGN C A H E D R E
  • Samsung SRP-350PG | Service Manual - Page 118
    1K 0.5 C242 100nF +5V R249 1.6K R250 10K VREF L206 1mm C14 47uF R239 R12 50V 1K 0.5 C229 100nF ED EDIT 1 2 3 SIGN C A R H E E N D W P C G G K REF NO SEC Samsung Electro-Mechanics 14-3
  • Samsung SRP-350PG | Service Manual - Page 119
    TPH_DATA R252 470 R241 200 C244 30pF C260 22pF CN1 5267-06A 1 2 3 4 5 6 L205 L204 L201 L203 L202 C259 22pF C258 22pF C255 22pF C256 220pF Samsung Electro-Mechanics +5V +5V TPH24V R253 10K C248 220pF C246 100nF C232 100nF R259 BD2 R261 R262 200 BEAD 200 200 +5V 24V R208 4.7K
  • Samsung SRP-350PG | Service Manual - Page 120
    Q9 2 MMBT2222ALT1 3 2 315303-0350 CN21 +5V CN7 35301-0350 3 2 1 +5V E4 C A3 2 SG-2BC K U105 1 1K R272 PAPER NEAR END SENSOR1> +5V R236 4.7K R234 1K NEARENDSENSOR C219 100nF ED EDIT 1 2 3 SIGN A C H E D R E N W P C G G K REF NO SEC Samsung
  • Samsung SRP-350PG | Service Manual - Page 121
    14 Schematic Diagrams ED EDIT 1 A R P SIGN REF NO C H E C K SEC E N G 2 D W G 3 14-6 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 122
    14 Schematic Diagrams ED EDIT 1 A R P SIGN REF NO C H E C K SEC E N G 2 D W G 3 Samsung Electro-Mechanics 14-7
  • Samsung SRP-350PG | Service Manual - Page 123
    14 Schematic Diagrams ED EDIT 1 A R P SIGN REF NO C H E C K SEC E N G 2 D W G 3 14-8 Samsung Electro-Mechanics
  • Samsung SRP-350PG | Service Manual - Page 124
    14 Schematic Diagrams 1 A B C D E 1 2 2 3 3 4 4 5 6 7 T.J.JEON SRP-350 USB Samsung Electro-Mechanics 14-9
  • Samsung SRP-350PG | Service Manual - Page 125
    ELECTRO-MECHANICS © SAMSUNG ELECTRO-MECHANICS Co.,Ltd. January. 2004 Printed in Korea.
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SERVICE
THERMAL RECEIT PRINTER
CONTENTS
SRP-350
/350S/350P/350U
THERMAL RECEIPT PRINTER
Manual
1.
Precaution Statements
2.
Product Specification
3.
Installation and Operation
4.
Disassembly and Assembly
5.
Maintenance and Adjustment
6.
Reference Information
7.
Special Circuit Descriptions
8.
Troubleshooting
9.
Exploded Views and Parts List
10.
PCB Layout and Parts List
1
2
. Block Diagram
1
3
. Wiring Diagram
1
4
.
Schematic Diagrams
SRP-350
G/350SG/350PG/350UG
Commands
11.
SRP-350 Ver.2 Series