Troubleshooting; Troubleshooting Electronic System - Hitachi DV-DS163E Service Manual

Details of Servicing and Troubleshooting > Troubleshooting

3-5 Troubleshooting

3-5-1 Troubleshooting electronic system

(1) SMPS Circuit (on SMPS P.C.B)
No 5.3VA
NO
F101: Normal?
YES
NO
BD101: Normal?
YES
NO
TH01: Normal?
YES
NO
Is Vcc (10V - 17V)
supplied to IC101 Pin4?
YES
NO
D128: Normal?
YES
NO
IC103 Pin1: Approx. 2.5V?
YES
NO
D121: Normal?
YES
NO
D122 : Normal?
YES
Replace F101.
Replace BD101.
Replace TH01.
Check D102, and
replace if necessary.
Replace D128.
Replace IC103.
Replace D121.
Replace D122.
3 - 7
NO
D125 : Normal?
YES
NO
D124 : Normal?
YES
NO
D127 : Normal?
YES
NO
D126 : Normal?
YES
Power Line on I/O P.C.B
Shorted.
Replace D125.
Replace D124.
Replace D127.
Replace D126.