Norcent LT3225 Service Manual page 24

32'' LCD TV
5.2 No sound
Check speakers are ok?
Check earphone is normal?
Check Q2 MUTE circuit
Test NJM2199 (U5) PIN 12 PIN
11 output is normal?
Test TC200 (U2) PIN9 PIN10 PIN11
PIN 12 is normal
OK
Test TP2050 (U1) PIN17 PIN10 PIN8
PIN2 Output is normal?
CHECK X701 surge is normal?
Check CAS-220/CS (U701) is
normal?
Check SF701 PIN5、4 signal
input is normal?
Check TUNER circuit
OK
NG
OK
OK
OK
OK
OK
OK
OK
OK
Check TPA6110A2 (U600)
Relative circuit is normal?
Check CS4335 (U405) PIN5
PIN 8 output is normal?
NG
Check NJM2199 (U5) PIN8 power
supply is normal?
OK
Check TC200 (U2) PIN21
NG
power supply is normal?
OK
Check TP2050 (U1) PIN15 PIN7 PIN4
NG
power supply is 20V; PIN23 PIN25 power
supply is 5V?
OK
NG
NG
Check ZR39660BGCG (U401) is normal?
24
Norcent LT3225