Video graphic printers

Sony UP-895: troubleshooting and error codes

The ServiceForge knowledge base holds 14 documented symptoms for the Sony UP-895, with 37 ranked causes, 30 diagnostic checks with test points and expected values, and 0 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

Paper feeding is out of order

Paper feed mechanism does not operate or functions intermittently

Ranked causes

1. Fuse F400 on MA-99 board is defective (common)
2. Pins 1, 3, 11 and 13 of IC301 on MA-99 board are defective (common)
3. Pins 2, 4, 10 and 12 of IC301 on MA-99 board are defective (common)
4. Pins 22, 23, 24 and 25 of IC304 on MA-99 board are defective (common)
5. Peripheral circuits Q404 and Q407, and CN201 on MA-99 board are defective (occasional)
6. Platen motor is defective (occasional)

First check

Check if fuse F400 is blown

Test point: Fuse F400 on MA-99 board
Expected: Fuse not blown

3 more checks with pass and fail actions, 6 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Print is faulty

Output print quality or content is defective; test pattern not properly printed in test mode

Ranked causes

1. Pin 126 of IC501 on MA-99 board is defective (unknown)
2. Peripheral circuits IC1, IC2 and Q200 on MA-99 board are defective (unknown)
3. Peripheral circuits IC6, Q6 and Q7 on MA-99 board are defective (unknown)
4. Peripheral circuit IC500 on MA-99 board is defective (unknown)
5. IC501 and CN9 on MA-99 board are defective (unknown)
6. Peripheral circuits IC501 and IC503 on MA-99 board are defective (unknown)

First check

Is video signal available at test point TP5 (AD-IN) on MA-99 board

Test point: TP5 (AD-IN)
Expected: Video signal present

4 more checks with pass and fail actions are in ServiceForge. Connect ServiceForge to your AI

Print is too dark or too light

Output from video graphic printer has improper density/contrast

Ranked causes

1. Peripheral circuit Q21 on MA-99 board is defective (unknown)
2. Peripheral circuits Q200 and Q16 on MA-99 board are defective (unknown)
3. Peripheral circuits Q16 and RV6 on MA-99 board are defective (unknown)
4. Peripheral circuit IC401 and pins 29 and 30 of CN9 on MA-99 board, or thermistor in head are defective (unknown)
5. Head voltage or CN9 on MA-99 board is defective (unknown)
6. Data buses of IC500 and IC503 on MA-99 board are defective (unknown)

First check

Reference voltage input to pin 2 of IC6 on MA-99 board when CONTRAST set to center position

Test point: IC6 pin 2
Expected: Reference voltage present

4 more checks with pass and fail actions are in ServiceForge. Connect ServiceForge to your AI

Print output is faulty or incorrect

Printed image on UP-895 printer is defective, missing, or shows degradation

Ranked causes

1. Video signal missing at AD-IN on MA-99 board (common)
2. Peripheral circuits IC1, IC2, Q200 are defective (occasional)
3. Peripheral circuits IC6, Q6, Q7 are defective (occasional)
4. IC500 data bus output is defective (occasional)
5. IC501 or IC503 peripheral circuits are defective (occasional)
6. IC501 pin 126 is defective (rare)

First check

Verify video signal present at TP5 (AD-IN) test point on MA-99 board

Test point: TP5 (AD-IN) on MA-99 board
Expected: Video signal present
Tools: Oscilloscope

6 more checks with pass and fail actions are in ServiceForge. Connect ServiceForge to your AI

Paper sensor out of order

Paper sensor signal not detected or LED indicator not functioning properly during paper detection

Ranked causes

1. PH31 on SE-531 board or D11 on SE-532 board defective (common)
2. LED on front panel or PH12 on SE-532 board defective (occasional)
3. Pins 18 and 19 of IC304 on MA-99 board defective (occasional)

First check

Check signal from sensor at pin 5 of CN2 on MA-99 board

Test point: CN2 pin 5 on MA-99 board
Expected: Signal present

1 more check with pass and fail actions are in ServiceForge. Connect ServiceForge to your AI

Door opening and closing is out of order

Door mechanism does not open or close properly

Ranked causes

1. PH32 or actuator on SE-531 board is defective (unknown)
2. Pin 20 of IC304 on MA-99 board is defective (unknown)

First check

Verify signal input to pin 6 of CN2 on MA-99 board

Test point: CN2 pin 6
Expected: Signal present

Calibration: Head voltage adjustment

Stair step pattern printed lacks smooth gradation or shows banding across 17 steps

Ranked causes

1. RV502 switching regulator requires adjustment (common)

First check

Print stair step pattern

Test point: Printer output
Expected: Smooth gradation in 17 steps
Tools: Printer, media

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Initialize print count history

Reset sheet counter to zero by initialization procedure

Ranked causes

1. Print count history requires initialization (common)

First check

Monitor for three buzzer sounds

Test point: Speaker output
Expected: Three buzzer sounds

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Print count history initialization

Print count history needs to be reset to zero

Ranked causes

1. Print count history reset procedure required (common)

First check

Listen for buzzer confirmation

Test point: Printer buzzer
Expected: Three buzzer sounds

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Head motor does not operate

Head up/down movement is out of order; head motor fails to respond

Ranked causes

1. IC400 and Q402 on MA-99 board defective (unknown)

First check

Verify head motor operation

Test point: Head motor
Expected: Head motor operates

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

IC304 control circuit defective

Pins 16 and 17 of IC304 malfunction, preventing head position control

Ranked causes

1. Pins 16 and 17 of IC304 on MA-99 board defective (unknown)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

No sensor signals at CN2 pins 2 and 3

Head position sensors not providing output signals to MA-99 board

Ranked causes

1. Head position sensors PH21 and PH22 on SE-531 board defective (unknown)

First check

Check sensor signals at CN2

Test point: CN2 pins 2 and 3 on MA-99 board
Expected: Signals present from sensors

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Pin 126 of IC501 is defective

IC501 pin 126 failure causing faulty print output

Ranked causes

1. Pin 126 of IC501 on MA-99 board is defective (unknown)

Test pattern does not print correctly in test mode

Printer fails to generate or print internal test pattern for diagnostics

Ranked causes

1. IC501 or IC503 on MA-99 board are defective (common)

First check

Replace MA-99 board if IC501 and IC503 are defective

Expected: Test pattern prints correctly

Community

0 fixes logged by technicians through their AI, with outcomes, for this model.

ServiceForge knowledge base record. Field-unverified unless technicians confirmed it. A teaching summary of the record, not a service manual. Export 2026-10-14.