Troubleshooting Guide - IBM L170 Service Manual
Color monitor chassis no. : cl-61
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Also See for L170:
- Service manual (54 pages) ,
- User manual (32 pages) ,
- User manual (32 pages)
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TROUBLESHOOTING GUIDE
NO POWER
(POWER INDICATOR OFF)
CHECK J705 VOLTAGE
PIN5, PIN6 (5V)?
YES
CHECK
U501 PIN 8 Voltage
(5V) ?
YES
CHECK KEY CONTROL
CONNECTOR ROUTINE
YES
IS U201
PIN114 (3.3V)
VOLTAGE ?
YES
CHECK U201 PIN 122
PULSE
YES
CHECK U201
1. NO POWER
NO
NO
NO
NO
- 16 -
CHECK POWER BOARD, AND
FIND OUT A SHORT POINT
AS OPENING
EACH POWER LINE
CHECK 5VS LINE
(OPEN CHECK)
NO PROBLEM
CHECK 3.3V LINE
CHECK X-TAL
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