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Sony UP895 Service Manual - Page 75

Ma-99 2/5, Borange, Abrown, Byellow, Ablack, Hmotor1, F400/125v/1.25a

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MA-99 (2/5) MA-99 (2/5) F400/125V/1.25A 15V ! 1 Q400 2SD999-T1-CLCK R404 2.2k R431 R432 22k 3.3k 5V-3 BZ400 B R405 1k R407 R408 10 10 F400 D400 10E-2 IC400 M54543L 2 2 R400 560 R401 560 R402 560 R403 560 2 2 3 3 3 3 CN6 2P 2 FAN+ 1 FAN- Q403 2SD992-Z-E2 R410 10k IC431 TC7S14FU-TE85R 5 2 4 3 IC430 TC7S00FU-TE85R 5 1 4 2 R430 3 330 R409 1k R406 1k Q401 2SC1623-T1-L5L6 Q402 2SD999-T1-CLCK 123456789 1 1 D401 1S2836-T1 Q404 2SD992-Z-E2 D402 1S2836-T1 Q405 2SD992-Z-E2 D403 1S2836-T1 Q406 2SD992-Z-E2 D404 1S2836-T1 Q407 2SD992-Z-E2 1 1 C433 0.1 C431 0.01 C432 0.1 2 R411 1.8k C401 47 25V 3 1 D405 1SS302-TE85L 2 D406 1S2836-T1 D407 1S2836-T1 2 3 1 2 3 1 -3 -3 1 2 3 CN7 CN8 HMOTOR1 N.C HMOTOR2 1 +V(RED) 2 B(ORANGE) 3 A (BROWN) 4 B(YELLOW) 3 5 A(BLACK) 6 +V(RED) WHITE UP-895/(E) A R412 1k R413 470 R418 100 R419 100 R414 220 R415 220 R416 220 R417 220 B2 A1 A2 B1 8765 H1 H2 1234 FAN MOTOR BUS BUZZER 1/5 1/5 5V L400 1µH 4 5V-3 L403 1/5 HEAD_TEMP 1µH R420 3.9k R421 15k 15V IC401 LM358PS-E20 THERMISTOR1 3/5 THERMISTOR2 3/5 IN2+ GND IN2- IN1+ OUT2 IN1- R423 100k C404 0.1 C403 10 6.3V VCC OUT1 R424 150k R425 22k C405 0.022 5 1 C406 R426 0.1 0 3 C407 47 25V C409 10 6.3V D408 1SS302-TE85L R427 0 2 MA-99 (2/5) B-CEPX112-MA99-S -3 -3 10-5 10-5 B C D E F G H

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

Match case Limit results 1 per page

10-5

UP-895/(E)

10-5

MA-99 (2/5)

-3

D401

D402

D403

D404

D405

D406

D407

D408

IC401

Q400

Q401

Q402

Q403

Q404

Q405

Q406

Q407

D400

IC430

IC400

BZ400

C401

C403

C404

C405

C406

C409

C431

C432

C433

CN7

CN8

F400

L400

R400

R401

R402

R403

R404

R405

R406

R407

R408

R409

R410

R411

R412

R413

R414

R415

R416

R417

R418

R419

R427

R430

R431

R432

L403

IC431

R421

R423

R424

R425

R420

R426

CN6

C407

1S2836-T1

1SS302-TE85L

1S2836-T1

1SS302-TE85L

LM358PS-E20

2SD999-T1-CLCK

2SC1623-T1-L5L6

2SD999-T1-CLCK

2SD992-Z-E2

10E-2

TC7S00FU-TE85R

M54543L

25V

6.3V

0.1

0.022

0.1

6.3V

0.01

0.1

1μH

560

2.2k

10k

1.8k

470

220

100

330

22k

3.3k

1μH

TC7S14FU-TE85R

15k

100k

150k

22k

3.9k

25V

MOTOR BUS

THERMISTOR2

THERMISTOR1

3/5

1/5

15V

HEAD_TEMP

1/5

5V-3

BUZZER

5V-3

FAN

IN2+

IN2-

OUT2

VCC

GND

IN1+

IN1-

OUT1

B(ORANGE)

A(BROWN)

B(YELLOW)

A(BLACK)

+V(RED)

WHITE

FAN+

FAN-

HMOTOR1

N.C

HMOTOR2

F400/125V/1.25A

MA-99 (2/5)

B-CEPX112-MA99-S