OK
NG
Change speaker unit
OK
NG
NG
Change main
board assembly
OK
NG
NG
NG
OK
OK
TV has picture
but no sound
Press “Mute”function or
adjust volume up to check
the sound be mute or not
Check speaker
unit 7~9
Check CN8-Pin1
&Pin2=22~24V
Change power
board assembly
Check U33-Pin13
&Pin18=22~24V
Check U31-Pin2=3.3V
Change main
board assembly
Check U32-Pin2=1.8V
Change main
board assembly
NG
Check U25-Pin1=8V
Change main
board assembly
END
Troubleshooting
-32-
Summary of Contents for L32R200
Page 8: ...Main PCB Top Bottom Layer 8 Main PCB top layer ...
Page 9: ...Main PCB Top Bottom Layer 9 Main PCB bottom layer ...
Page 26: ...IC Block Diagram 26 ...
Page 27: ...IC Block Diagram 27 U9 U29 4 CHANNEL ANALOGUE MULTIPLEXER HEF4052BT ...
Page 28: ...IC Block Diagram 28 U23 5A LOW DROPOUT LINEAR REGULATOR 1 8V TO 263 3 U28 ...
Page 30: ...Transistor Mark 30 BC847B BC846B PT7M7809S7 ...
Page 35: ...Parts List 35 o N t i u c r i C y t Q n o i t p i r c s e D o N t r a P FOR REFERENCE ONLY ...
Page 36: ...Parts List 36 o N t i u c r i C y t Q n o i t p i r c s e D o N t r a P FOR REFERENCE ONLY ...
Page 37: ... o N t i u c r i C y t Q n o i t p i r c s e D o N t r a P Parts List 37 FOR REFERENCE ONLY ...
Page 38: ...Parts List 38 o N t i u c r i C y t Q n o i t p i r c s e D o N t r a P FOR REFERENCE ONLY ...
Page 39: ...Parts List 39 o N t i u c r i C y t Q n o i t p i r c s e D o N t r a P FOR REFERENCE ONLY ...
Page 41: ...Parts List 41 o N t i u c r i C y t Q n o i t p i r c s e D o N t r a P FOR REFERENCE ONLY ...
