Check And Remedy When The Shooting Picture Is Impossible; Check And Remedy When The Taking In Pictures Is Impossible - Epson PhotoPC3100Z Service Manual

PhotoPC 3100Z
3.2.2 Check and remedy when the shooting picture is
impossible
Press the shutter button.
IC301-7, 58
NO
(SCAN IN3)
Pulse input
YES
LOW
CN303-7, 8
(Pon, P(A) ON)
HIGH
CN301-6, 21 22
NO
All HIGH
YES
NG
Serial communication
OK
Check CA2.
Flowchart 3-2. Cannot Shoot a Picture
Troubleshooting
Check flexible print circuit (FPC)
including shutter SW and CN301,
R3007, R3009 and D3004.
Check IC301, R3040, R3041 and PW1.
Check IC301, CA2 and PW1.
Check IC301 and CA2.
Troubleshooting
3.2.3 Check and remedy when the taking in pictures is
impossible
CLK(72MHz) INPUT TO
YES
IC102-286
(CLK IN 1)
NO
NG
CLK(36MHz) INPUT TO
IC101-132 (CLK IN 1)
OK
NG
IC 101-61
( ZAS )
OK
NG
IC 101-52
( ZBREQ )
OK
NG
IC 101-56
( ZBGRNT )
OK
NG
IC101-118, 119
( IRL 1, 2 )
OK
Check the solder condition on
each pin of CPU and memory.
Flowchart 3-3. Cannot Take in Picture.
Revision A
Check oscillation X1101 and IC111.
Note: A clock to control the system.
Check IC102-276 pin.
Note: base clock of CPU.
Check address and data bus for IC121.
Note: A signal always be generated when CPU
accesses to memory.
A signal of ASIC to allow CPU to use the
data bus.
If no signal, DMA transport is impossible.
A signal to be generated when CPU is
allowed to pass the usage right of data bus
receiving ZBREQ.
If no signal, DMA transport is impossible.
Check each interface.
Note: hand shake between 8 bit CPU (micro
computer) and RS232C.
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