LG LHT-7601-IA, LHT-7652-IA, LHT-9656-IA, XHT-7650-X, XHT-9650-X Service manual

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DVD/CD RECEIVER
SERVICE MANUAL
MODELS : XH-T9650X/XH-T7650X/LH-T7652IA/XH-TK9650Q/LH-T9656IA/LH-T760IASERVICE MANUAL
MODELS : XH-T9650X/XH-T7650X/LH-T7652IA/
XH-TK9650Q/LH-T9656IA/LH-T760IA
THE P1301 IS OK?
CHECK IF
CHECK IF
THE DIS301 IS OK?
P1301
Short 1pin of CN901 with 4pin of CN901 in SMPS part.
PIN1 PIN2 PIN3 PIN12
: -41 VKK : -22 FL+ : -26.5 FL-
: +5.0
CHECK IF
R345 ~ R350, R154
OK.
REPLACE R345 ~ R350, R154.
Check if
the Remocon
waceform of the
P3101 pin 10
is OK
Check if
the RM301
voltage is OK(5V)
Resoldering or Replace RM301
2-4 2-5
WIRING DIAGRAM
2-6 2-7
BLOCK DIAGRAM
2-8 2-9
CIRCUIT DIAGRAMS
1. SMPS(POWER) CIRCUIT DIAGRAM (1000W, LH-T96’s)
NOTES) Symbol denotes AC ground.
NOTES) Symbol denotes DC chassis ground.
NOTE) Warning
NOTE) Parts that are shaded are critical NOTE) With respect to risk of fire or NOTE) electricial shock.
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R ST
2-10 2-11
2. SMPS(POWER) CIRCUIT DIAGRAM (700W, LH-T76’s)
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R ST
NOTES) Symbol denotes AC ground.
NOTES) Symbol denotes DC chassis ground.
NOTE) Warning
NOTE) Parts that are shaded are critical NOTE) With respect to risk of fire or NOTE) electricial shock.
2-12 2-13
3. SMPS(POWER) CIRCUIT DIAGRAM (300W, LH-T36’s)
NOTES) Symbol denotes AC ground.
NOTES) Symbol denotes DC chassis ground.
NOTE) Warning
NOTE) Parts that are shaded are critical NOTE) With respect to risk of fire or NOTE) electricial shock.
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R ST
2-14 2-15
4. POWER INTERFACE CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R ST
2-16 2-17
5. µ-COM(MAIN) CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R ST
2-18 2-19
6. SERVO CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R ST
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