Troubleshooting - Canon PS-7000 Service Manual

1. Troubleshooting

1.1. Troubleshooting
Follow the flowchart below, to identify problem part.
Start of Troubleshooting
Connect the power cord.
Power on.
Check LED.(See page 3-9.)
Correct?
Yes
Check the output voltage from the Power Supply unit, at C2 on the Main Board. (See the figure above.) *1
Correct?
Yes
To DIAG Troubleshooting.
*1: The correct C2 voltage is 5V.
*2: Be sure to use the EEPROM from the original Main Board on the replaced new Main Board. (See page 1-5 for details.)
No
Check the color of Power LED.
Red?
Yes(Red)
Remove all the DRAM SIMM, and
insert good DRAM SIMM in Slot -
1.
Start the machine again.
Check LED.(See page 3-9.)
Correct?
Yes
DRAM SIMM is defective. Please
replace it with a good one.
No
Replace the Main Board.
Network
Board
HDD
Viewed from the Right Side Cover side.
No(Other than red)
No
No
Correct?
Yes
*2
To Start of
Troubleshooting.
To Power Supply Troubleshooting.
3-1
Chapter 3 Troubleshooting
Measuring points
+
C2
Main board
No
Correct?
Yes
To Troubleshooting by
LED.