Philips 32HF7445/93 Service Manual page 17

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Service Modes, Error Codes, and Fault Finding TPT1.1HA LA 5. EN 17
5.2 Repair Flow Chart
1.No work/LED is off
Check if
No
power switch is
Replace Power switch
normal
Yes
Check
IR board CN001
No
pin1=0V,pin2=3.7V,
Check IR board
pin3=3V,pin4=2.85V
,pin5=5V,pin6
=3.3V
Yes
Check scaler board U102
pin1=14V,pin4=1.22V,
pin7=16V,pin8=5V,
H_17010_020.eps
180907
Figure 5-5 Start-up flowchart