Polaroid FLM 3701 Service Manual
Polaroid FLM 3701 - 37" LCD TV Manual
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Polaroid FLM 3701 manual content summary:
- Polaroid FLM 3701 | Service Manual - Page 1
COLOR TELEVISION LC -37K7 - Polaroid FLM 3701 | Service Manual - Page 2
the body of the service manual. Please reference the part numbers below when ordering replacement boards of the servicing of this model. If you require additional technical support, please contact our Tech Support line at 1-866-396-6322 Model Part Number Description Boards FLM-3701 667-L37K5-20A - Polaroid FLM 3701 | Service Manual - Page 3
instruction ...3 Trouble shooting ...5 Method of software upgrading ...7 LC-37K7 working principle analysis...9 LC-37K7 block diagram...10 IC block diagram...11 Main assembly...18 Identification criteria for the bright spot and dark spot of the LCD screen...19 Wiring diagram ...20 Troubleshooting - Polaroid FLM 3701 | Service Manual - Page 4
Attention: This service manual is only for service personnel to take reference with. Before servicing please read the following points carefully. Safety instructions 1. Instructions Be sure to switch off the power supply before replacing or welding any components or inserting/plugging in connection - Polaroid FLM 3701 | Service Manual - Page 5
please avoid displaying still picture in high brightness for a long time. 3. Points for attention during installation 3.1 The front panel of LCD screen is of glass. When installing it please make sure to put it in place. 3.2 For service or installation it's necessary to use specified screw lest it - Polaroid FLM 3701 | Service Manual - Page 6
flow-chart is shown as fig-1 Check DDC and FLASH To produce CPU board and analog board Check the CPU board and analog board All testing Connect with central signal source, then check each function of TV such as analog control etc., check the output of headphone and speaker Input AV/S and HD - Polaroid FLM 3701 | Service Manual - Page 7
"AUTO" to do the auto adjustment until the screen is filled with picture. Use the same method to do auto adjustment for the following items: TIME302 ( not above 128 and let its value 128 at least. 3.3 Adjustment TV channel 3.3.1 Adjustment VCO, OPTION, sub-brightness and sub-contrast Input AV - Polaroid FLM 3701 | Service Manual - Page 8
level using white balancer button on remote control again and Picture mode Sound mode N/R SCREEN setting NATURE NEWS WEAK 16:9 item OSD language VGA color temperature SPEAKER HEAD PHONE setting English 9300 ON ON item BALANCE SRS CCD Turn off setting 50 OFF OFF TV Trouble shooting Before servicing - Polaroid FLM 3701 | Service Manual - Page 9
non professional radio station and cellular phone. 2.TV set: Symptoms Unable to switch the power on No picture and sound Possible cause Check to see if the power plug has been inserted properly into the socket. Check to see if the power supply of liquid crystal TV has been switched on. ( as can be - Polaroid FLM 3701 | Service Manual - Page 10
the receivable scope) Remote control cannot work properly No picture and sound, but only hash. Blur picture No sound When playing VHS picture search tape, angle from the monitor. Check if there is any obstruct between the remote control and the TV set. Check if the remote control signal- receiving - Polaroid FLM 3701 | Service Manual - Page 11
/XP/NT) FlashUpgrader (use under window 98), The following interfaces will show up after running the program: Based on the computer features flash. Then shut the main power supply and it's OK just switch it on again. Note: Do not shut the power off or turn the TV set on during the FLASH write - Polaroid FLM 3701 | Service Manual - Page 12
, then it will be converted into signal format which can be accepted by LCD screen namely 3 low-voltage differential signal and 1 clock signal, finally send it to LCD screen to do the picture display PWM of U12 can also be used to control the brightness of back light-source. Send SIF (the second IF - Polaroid FLM 3701 | Service Manual - Page 13
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IC block diagram 1.MSP3420 Pins description: 2,3 PIN: SCL,SDA applied for control the operation of IC . 27,28 PIN: output left and right sound channel R/L to speaker processor. 36,37 PIN:AV OUT of sound R/L. 47,48 PIN:D4-1/D4-2/PCMCIA selected input R/L. 50,51 PIN:Input of VGA. R/L 53,54 PIN:Input - Polaroid FLM 3701 | Service Manual - Page 15
2.VPC3230 Pins description: 4 PIN: Input U of PCMCIA. 5,73 PIN: Input Y of PCMCIA. 6 PIN: Input V of PCMCIA 31-34, 37-40 PIN: output format signal of. ITU-R656 70 PIN:Video of AV OUT 71 PIN:Input C of SVHS. 72 PIN:input Video (SVHS in - Polaroid FLM 3701 | Service Manual - Page 16
3.AD9883 13 - Polaroid FLM 3701 | Service Manual - Page 17
4.FLI2310-Simplified Internal Block Diagram 14 - Polaroid FLM 3701 | Service Manual - Page 18
5.JAG-ASM 15 - Polaroid FLM 3701 | Service Manual - Page 19
6. TFP403 functional block diagram 3.3 V 3.3 V 1.8 V Regulator 3.3 V Internal 50- - Polaroid FLM 3701 | Service Manual - Page 20
7. DS90C385 DS90C365 DS100868-1 DS100868-29 Order Number DS90C385MTD or DS90C385SLC See NS Package Number MTD56 or SLC64A Order Number DS90C365MTD See NS Package Number MTD48 17 - Polaroid FLM 3701 | Service Manual - Page 21
VPC3230D (353-32300-80) MST9883B (353-98830-10) DS90C385 (353-03850-20) TSC80251G2D AT49F002NT (353-80251-10) (352-49002-70) IR board Keypad board Earphone assy Power supply board Remote control (RC-Y01-0AR) Panel (LC370W01) 667-L40D9-09 667-L37K7-05 667-L37K7-10 667-L23K7-20 301-YP42K9-010A 335 - Polaroid FLM 3701 | Service Manual - Page 22
Identification criteria for the bright spot and dark spot of the LCD screen Category criteria One single spot 2 neighboring spots Q'ty allowed 15" ≤5 ≤2 ≤5 ≤6 20" as a defected point if its area exceeds 1/2 of a single picture element (R,G,B). 2. Definition of bright spot: It is identified as a - Polaroid FLM 3701 | Service Manual - Page 23
To speaker To earphone Top panel AV processing board Left panel Right panel CPU BOARD Wiring diagram To Keypad board To Remote contro 20 - Polaroid FLM 3701 | Service Manual - Page 24
Troubleshooting charts 1. No raster Turn-on power supply, check if the red indicator is light in the STANDBY? no blue Check PIN3(5V output) of the power supply board C3 Check the indicator in turn-on condition Non-change color no Check if it's melted of FUSE in the power supply board? no no - Polaroid FLM 3701 | Service Manual - Page 25
menu, operation CLEAR EEPROM, then turn off , turn on again , it if display picture. yes Adjust CPU board again Which is no VGA/DVI signal of channels YPRPB TV Testing power supply (+12V) of video processing board no Replacing CPU board Replacing power supply board Replacing U30 Replacing N1 no - Polaroid FLM 3701 | Service Manual - Page 26
3.no sound Check if PIN1 and PIN2 is 18V of XA12 yes Check if PIN2 is 12V of XA09 yes Check PIN5 and PIN8 output wave of NA03 yes Replacing NA04 no no Check power supply no Check PIN27 and PIN28 output wave of NA01 no yes Check PIN67 wave of NA01 no Replacing - Polaroid FLM 3701 | Service Manual - Page 27
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COLOR TELEVISION
LC
-37K7