Read Panasonic SU-HTB520EB / SU-HTB520EG / SB-HWA520EB / SB-HWA520EG / SC-HTB520EB / SC-HTB520EG / SU-HTB520EGK / SB-HWA520EGK Service Manual online
23
7 Troubleshooting Guide
Power ON
No Turn ON
Check with Remocon - OK
Check connection of:
Check IC2201:
No Operation
- CN6103 (Button PCB)
pin90
- CN6101 (LED PCB)
pin89
- CN2203 (Main PCB)
Check with Remocon - NG
Check connection of:
(HDMI PCB)
- CN6101 (LED PCB)
Check CN2901 pin1
- CN2203 (Main PCB)
Check IC2901: 3.3V
Check fuse F101 (SMPS PCB)
Check IC2202 pin1, 2
Check X2201 pin1, 2
Check IC2201: 3.3V
Check X2201 pin1, 2
Check IC2201: 3.3V
LED Display
LED not lit
Check service mode for all
Check connection of:
Check IC6101: 3.7V
LED's ON
- CN6101 (LED PCB)
Check IC2908: 5V
- CN2203 (Main PCB)
Sound
No audio o/p -
Check Optical-in - OK
Check IC2601: 1.8V & 3.3V
Check IC2602: 3.3V
(HDMI-in)
Check X2601
Check Optical-in - NG
Check connection of:
Check IC2401: 3.3V
- CN2202 (Main PCB)
Check IC2001: 1.8V & 3.3V
No audio o/p -
Check TV HDMI-in port for ARC
- CN5200 (D-Amp PCB)
Check X2001
(HDMI-out) ARC
compatibility
Check IC5200: 3.3V
Check X5200
Check IC5100: 12V, 23.5V
Check X5200
Check IC5100: 12V, 23.5V
No audio o/p -
Check connection of TX card
Check connection of:
Check IC2001 pin48
Subwoofer
Check Subwoofer Green LED
- CN3000 (Wireless PCB)
Check IC3002: 23.5V (SubWoofer)
Check no interference from
- CN2201 (Main PCB)
Check IC5200: +23.5V (Subwoofer)
adjacent wireless equipments
Picture
No video o/p
Check IC2601: 1.8V & 3.3V
Check IC2501: 1.8V, 3.3V & 5V
Check X2601
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