Sony UP-D2550S, Service Manual

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3-4 UP-D2550S (UC,CE)
3-2-2. Using the LED Display PDSP2113 (8-749-922-58)
If a personal computer is not available, service commands can be written and read using the LED
display PDSP2113.
1) As the PDSP2113 lead pin may break, use the IC socket 28P (1-526-659-21, etc.) as much as
possible.
2) With the power OFF, insert the PDSP2113 into CNI 212 of the IF-762 board.
3) When the power is turned ON,
UP-D2550S is appeared.
4) Use S201 through S206 on the IF-762 board.
1. PAGE S201 Used for switching pages. The page changes with each press.
2. ADDR- S202 ADDR+ S203 Increases/decreases the address
3. DATA- S204 DATA+ S205 Increases/decreases the data
4. EXEC S206 Execute Used to write the command.
<Note> Do not perform writing operations other than the writing of service commands
described in this manual, or errors may occur in the worst case.
01 00 00
↑ ↑ ↑
03 00 00
04 00 00
05 00 00
1 S STEP = Stair-step
TO (Displayed in decimal)
HE (Displayed in decimal)
↓
Display of printer status
↓
Service command page 1
↓
Page Address Data
Service command page 2 (Do not use this.)
↓
Service command page 3
↓
Service command page 4
↓
Service command page 5
↓
Built-in test pattern write command
(The pattern can be changed using the ADDR+/- key.)
↓
Display of total number of printed sheets
↓
Display of number of printed sheets after replacing head