Panasonic SA-PT660 Technical Manual page 31

Dividing a PS problem to the
output or regulation stage
with 2 voltages.
Measure voltages. Look up voltages
on chart below for the defect area.
1
2
1. Output volt 2. FdBk volt
@ w5713 at w5711
30Vdc 1.5Vdc
Lower than 30V Higher than 1.5V
Lower than 30V Lower than 1.5V
Higher than 30V Higher than 1.5V
Higher than 30V Lower than 1.5V
Slide # 31
Power Supply Block
Defect area
Normal Operation
Reg circuit (IC5801, Q5802)
Output Stage (IC5701,
T5701, D5702)
Output Stage (IC5701,
T5701, D5702)
Reg circuit (IC5801, Q5802)
for Stby, Pwr On, Isolation.
Plug In, Power ON Sequence
1. Press Power ON
2. Fan turns on - Starts Noisy
3. Hello is displayed
4. Last Mode used is displayed.
Outline Models:
Wireless SA-PT660
Mech SA-PT760
Pwr Supply SA-PT960
Protection SA-PT1060
Audio SH-FX67, 85