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Sony UP895 Service Manual - Page 67

A-8323-916-a O Mounted Circuit Board, Se-531

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-----------SE-531 BOARD -----------Ref. No. or Q'ty Part No. SP Description 1pc A-8323-916-A o MOUNTED CIRCUIT BOARD, SE-531 CN31 1-573-806-21 s PIN,CONNECTOR (6P)(SMD)(1.5MM) PH21 8-719-052-69 s PHOTO INTERRUPTER RPI-352 PH22 8-719-052-69 s PHOTO INTERRUPTER RPI-352 PH31 8-719-988-59 s PHOTO TRANSISTOR PT501A PH32 8-749-010-50 s PHOTO INTERUPTER RPI-5100 R21 1-216-073-00 s RESISTOR,CHIP 10K 1/10W(2012) R22 1-216-029-00 s RESISTOR,CHIP 150 1/10W(2012) R23 1-216-073-00 s RESISTOR,CHIP 10K 1/10W(2012) R24 1-216-029-00 s RESISTOR,CHIP 150 1/10W(2012) R31 1-216-029-00 s RESISTOR,CHIP 150 1/10W(2012) R32 1-216-073-00 s RESISTOR,CHIP 10K 1/10W(2012) -----------SE-532 BOARD -----------Ref. No. or Q'ty Part No. SP Description 1pc A-8323-917-A o MOUNTED CIRCUIT BOARD, SE-532 1pc 3-689-205-02 s HOLDER (A), LED 1pc 3-187-312-02 s HOLDER (P), LED C11 1-164-004-11 s CAPACITOR,CERAMIC 0.1MF/25V C12 1-164-004-11 s CAPACITOR,CERAMIC 0.1MF/25V CN11 1-580-056-21 o PIN,CONNECTOR 3P D11 8-719-945-20 s LED GL-520 PH12 8-729-019-26 s TRANSISTOR PT493F R11 1-216-023-00 s RESISTOR,CHIP 82 1/10W(2012) R12 1-216-047-91 s RESISTOR, CHIP 820 1/10W(2125) ----------SU-52 BOARD ----------Ref. No. or Q'ty Part No. SP Description 1pc 1-676-696-11 o PRINTED WIRING BOARD, SU-52 CN41 1-770-160-21 s PIN, CONNECTOR (SMT) 2P UP-895/(E) 8-13

Section	Page
Cover	1
Table of Contents	3
1.Operating Instructions	7
2.Service Information	17
2-1. Board Layout	17
2-2. Disassembly	17
2-3. Removal of Major Parts	18
2-3-1. Removal of Mechanical Block	18
2-3-2. Removal of MA-99 Board	19
2-3-3. Removal of Switching Regulator	19
2-3-4. Removal of Thermal Head	20
2-4. Tightening the Screws	21
2-5. Installation of Fan Motor	22
3.Electrical Alignment	23
3-1. AGC Adjustment	23
3-2. Video Level Adjustment	23
3-3. Brightness and Contrast Adjustment	24
3-4. Head Voltage Adjustment	25
3-5. Initialization of Print Count History	25
4.Circuit Operation Description	27
4-1. Video Circuit	29
4-1-1. BNC Input Connector - Trap Filter Circuit	29
4-1-2. nC-SYNC Generator Circuit	29
4-1-3. AGC Circuit	29
4-1-4. Brightness and Contrast Control	29
4-1-5. A/D Conversion and D/A Conversion	29
4-2. Clock Generator Circuit	30
4-3. Memory and Head Control Circuit	30
4-3-1. Reading the Serial Data from System Control	31
4-3-2. Writing in Frame Memory	31
4-3-3. Transfer from Frame Memory to Line Memory	31
4-3-4. Thermal Head Control and One-Line Memory	31
4-4. System Control Section	34
4-4-1. Reading of Keys	34
4-4-2. Reading of Function Switches	34
4-4-3. Platen Motor Control	35
4-4-4. Head Up and Down Control	36
4-4-5. Monitor of Door Sensor	36
4-4-6. Monitor of Paper Sensor	36
4-4-7. Monitor of Head Temperature Sensor	37
4-4-8. Control of Head Fan Motor (for Head Cooling)	37
4-4-9. Control of Video Circuit Section	37
4-4-10. Control of Memory and Head Control Circuit	38
4-4-11. Gamma Correction and Thermal Storage Correction	39
4-4-12. Discrimination of Video Signal to be Input	39
4-4-13. Remote Interface	39
4-4-14. Storage of Print Count History	39
4-5. Thermal Head Section	40
4-5-1. Structure	40
4-5-2. Basic Operation	41
4-5-3. Stair Generation	41
4-5-4. Temperature Correction	42
4-5-5. Line Count Correction	42
5.Troubleshooting	43
5-1. Print is Faulty	43
5-2. Print is Too Dark or Too Light	44
5-3. “Paper Sensor” is Out of Order	45
5-4. Head Operation (Up & Down) is Out of Order	46
5-5. Paper Feeding is Out of Order	47
5-6. Door (Opening and Closing) is Out of Order	48
6.Service Mode (Self-diagnostic Function)	49
6-1 Printing the Test Pattern	49
6-2. Up/Down Operation of Head	50
6-3. Feed Operation	50
6-4. Display and Clearing of Print Sheet History	51
7.Semiconductor Pin Assignments	53
8.Spare Parts	55
8-1. Notes on Repair Parts	55
8-2. Exploded Views	56
8-3. Electrical Parts List	61
9.Block Diagram	69
Overall	69
10.Schematic Diagrams and Board Layouts	71
Frame	72
KY-454	73
SE-531	73
SE-532	73
SU-52	73