Troubleshooting - Epson PhotoPC2100Z Service Manual

PhotoPC 2100Z

3.1 Troubleshooting

This section describes how to identify the defective unit or parts from observed
problems.
Table 3-1. Troubleshooting
Problem Possible Cause
LCD shows Connector between LCD and Main
completely Circuit Board is disconnected, or
white display at FFC of LCD broken.
shooting/
playback
Faulty operation of charge pump
which generates -32V in LCD circuit
LCD shows LCD backlight not lit
completely black
display
Defective LCD
Defective backlight inverter circuit
on Flash Circuit Board
Black spots are Defective LCD monitor
seen on LCD
Bright spots are Defective LCD monitor
seen on LCD
Troubleshooting
Checking and Remedy
Check connection of
connectors CN1105 and 1106
on Main Circuit Board.
Replace LCD if FFC is broken.
Replace Main Circuit Board.
Check connection of connector
CM3104 on Flash Circuit
Board.
Replace LCD.
Replace Flash Circuit Board.
Normal if 6 pixels or less
Replace LCD if more.
Low-bright spots (pixels seen
through 10% ND filter)
• Normal if 4 spots or less
• Replace LCD if more.
High-bright spots (pixels seen
through 5% ND filter)
• Normal if 1 spot
• Replace LCD if more.
Total of low- and high-bright
spots
• Normal if 4 spots or less in total
• Replace LCD if more.
Troubleshooting
Table 3-1. Troubleshooting (continued)
Problem Possible Cause
Taken pictures Shorted CCD power supply
are completely
Faulty operation of shutter
black
Taken pictures CCD peripheral circuitry broken
are abnormal down
Problem with software
Date setting Insufficient charging of the lithium
screen appears ion secondary battery
every power on
Power does not Batteries have run down
turn on
Defective AC adapter or faulty
connection of AC adapter
When lens cover switch is operated
• FFC of Release Circuit Board is
disconnected, or FFC broken
When playback button is pressed
• FFC of Rear Cover is disconnected,
or FFC broken
Faulty connection of board-to-board
connector
Faulty connection of pins BATT1
and BATT2, which connect Power
Supply Circuit Board to batteries
Blown fuse on Power Supply Circuit
Board
Faulty operation of 8-bit CPU
Power turns on There is a short circuit somewhere, so
once, but it turns that Short-circuit protector of DC-DC
off immediately Converter on Power Supply Circuit
Board has operated.
Revision A
Checking and Remedy
Replace Main Circuit Board.
Check initial operation of shutter
at power on.
• If it does not operate, replace
Lens Unit (Lens Assy).
Replace Main Circuit Board.
Check software version.
Install the latest version of
firmware.
Replace Main Circuit Board if
replacement of batteries does not
solve problem.
Replace the batteries.
Check AC adapter.
Check connection of connector
CN1103 on Main Circuit Board.
Check connection of connector
CN1104 on Main Circuit Board.
Check connection of connector
CN1102 on Main Circuit Board.
Check connection between pins
and Power Supply Circuit Board.
Replace Power Supply Circuit
Board.
Replace Main Circuit Board.
Identify the location of short
circuit.
For example, CCD terminals.
44