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7 Troubleshooting Guide
7.1.
Troubleshooting Guide for F61 and/or F76
This section illustrates the checking procedures when upon detecting the error of “F61” and/or “F76” after power up of the unit. It is
for purpose of troubleshooting and checking in SMPS, D-Amp & Main P.C.B.
Symptom
Remarks
Set cannot ON
1
AC Cord
1
AC Cord Faulty, Loose connection.
Refer to
Section 7.2.1
Fig. 1. SMPS
P.C.B.
Refer to
Section 7.2.1
Fig. 1. SMPS
P.C.B.
Refer to
Section 7.2.2
Fig. 2. Main P.C.B.
Refer to
Section 7.2.1
Fig. 1. SMPS P.C.B.
Refer to
Section 7.2.1
Fig. 1. SMPS
P.C.B.
2
AC Inlet, P5701
2
P5701 solder crack, dry joint.
3
Fuse, F1
3
Fuse, F1 Open.
4
Photocoupler
4
PC5702/PC5799 solder crack.
PC5702, PC5799
Dry joint, short circuit, open circuit.
5
Switching IC, IC5701
5
IC5701 Faulty.
6
Switching IC, IC5799
6
IC5799 Faulty.
Set can ON
1
Speaker Output
1
Faulty speaker unit, Loose connection, Short.
Refer to
Section 7.2.3
Fig. 3. D-Amp
P.C.B.
then F61
2
D-AMP circuit
2a
D-AMP IC, IC5900 defective.
(DC voltage of +/-30V detected at speaker output)
Set can ON
1
Transformer T5701
1a
Short circuit between Pin 14 and Pin 15.
then F76
1b
Short circuit between Pin 15 and Pin 16.
1c
Short circuit between Pin 16 and Pin 17.
2
DC-DC Circuit
2a
Check cable wire connection between cable wire ZJ2701
(At Main P.C.B) & connector CN5802 (At SMPS P.C.B)
2b
Voltage Regulator IC (IC2701) &
Switching Regulator IC (IC2702) faulty.
3
Photocoupler
3
PC5720 solder crack,
PC5720
Dry joint, short circuit, open circuit.
Set can ON
1
Rectifier D5801
1a
Improper contact between D5801 to Heatsink.
working normally
Rectifier D5802
Improper contact between D5802 to Heatsink.
for some time
2
Thermistor TH5860
1b
Set trigger temperature protection.
then F76
Possible Fault(s)
Checking Items
Содержание SA-AKX10PH
Страница 14: ...14 5 2 Remote Control Key Button Operation ...
Страница 15: ...15 5 3 Media Information ...
Страница 25: ...25 7 2 3 D Amp P C B Fig 3 D Amp P C B D Amp IC IC5900 ...
Страница 31: ...31 9 2 Main Components and P C B Locations ...
Страница 57: ...57 Step 5 Detach 16P FPC at the connector CN7001 on CD Servo P C B ...
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Страница 104: ...104 ...
Страница 114: ...114 MMH1002 C7670 F1H1C104A042 0 1uF 16V 1 Safety Ref No Part No Part Name Description Qty Remarks ...