IBM E74 Service Manual page 14
Color monitor chassis no. : ca-119
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Also See for E74:
- User manual (22 pages) ,
- Operating instructions manual (18 pages) ,
- Installation manual (6 pages)
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NO CHARACTER
CHECK
IC302
PIN 7(5V) ?
YES
CHECK
IC302 PIN 1, 3, 5?
YES
CHECK
IC302 PIN 14, 16, 18 ?
YES
CHECK
IC303 PIN 7 (105V)
PIN 3 (13V) ?
YES
CHECK
IC303
PIN 1, 2, 4 ?
YES
CHECK
R, G, B CATHODE
VOLTAGE?
YES
TROUBLE IN
CRT SOCKET
2. NO CHARACTER
NO
NO
NO
NO
NO
NO
- 14 -
TROUBLE IN
P302 5V LINE
TROUBLE IN
PC SIGNAL,
P301 SIGNAL CABLE
TROUBLE IN
IC302
TROUBLE IN
P303 12V LINE/
80V LINE
TROUBLE IN IC303
TROUBLE IN
R331~R333,
L311~L313,
D307~D312
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