Sharp LC-37HV4E (serv.man20) Service Manual ▷ View online
29
LC-37HV4E
17
16
19
18
15
14
13
12
11
10
LCD Panel
System Start-up, AC, Start-up Detection)
m Connector (20pin)
C2202 (Z2015CE)
(TMDS)
AUDIO
SRS
AUDIO1
IC3801
(NJM2193M)
DAC
AUDIO1
IC3802
(M62392M)
F Adjustment
Sound Processor
(AUDIO1)
IC3803 (CXA1352A)
ALC
Tripath AMP
AUDIO2
IC3812
(TA2024++)
External SP
Internal SP
Mute
Reset
L, R
Power Control
Monitor MICON
H8
(MICON)
IC2004 (3491CE)
OSD Control
ntrol
17 (Address, etc)
16 (Data)
SDRAM (OS_ODD)
IC4902 (A312WJ)
mer Control, Image Control, Test Pattern
Gradation Power Bias
Gradation Power
(V0, V64, V96, V128, V160,
V192, V224, V256)
Bias Setting D/A
(GRAYLEVEL)
Thermistor
L RGB
8X3X2
8X3X2
E
2
PROM
R/C.LED
KEY
O P C
COM Control
30
LC-37HV4E
8
7
10
9
6
5
4
3
2
1
A
B
C
D
E
F
G
H
OVERALL WIRING DIAGRAM
MAIN PWB
KEY PWB
R/C, LED PWB
INVERTER-1 PWB
INVERTER-2 PWB
SPEAKER-R PWB
POWER PWB
1
5
1
8
1
7
6
1
1
1
3
1
1
4
4
1
1
5
5
1
7
1
1
12
1
12
1
2
1
2
1
14
1
3
4
5
1
6
5
1
1
8
P380
CN3701
CN4701
CN2702
QCNW-A974WJZZ
QCNW-A965WJZZ
QCNW-A966WJZZ
QCNW
-A970WJZZ
QCNW
-A969WJZZ
QCNW
-A973WJZZ
QCNW
-A972WJZZ
QCNW
-A976WJZZ
QCNW
-A481WJZZ
QCNW
-A480WJZZ
QCNW
-A481WJZZ
QCNW
-A975WJZZ
QCNW
-A967WJZZ
CN3702
CN4702
P7554
P7555
P7508
P7507
P7505
P7506
P101
P152
P151
CN2002
CN2004
CN7707
CN7704
B to B
31
LC-37HV4E
17
16
19
18
15
14
13
12
11
10
WB
INVERTER-3 PWB
INVERTER-4 PWB
SPEAKER-L PWB
AUDIO PWB
12
1
6
1
1
12
3
1
4
1
14
1
12
1
12
1
6
1
1
3
2
5
6
1
2
1
2
1
2
1
3X Gate Source Driver
2
3X
3
3X
4
3X
5
3X
6
3X
To LCD Panel
CN2003
CN7705
P7616
P7615
P7618
P7617
P7645
P7647
P7644
P3802
P3801
P3811
ZZ
QCNW-A968WJZZ
QCNW-A971WJZZ
QCNW-B010WJZZ
QCNW-B088WJZZ
QCNW
-A481WJZZ
QCNW
-A480WJZZ
QCNW
-B063WJZZ
B to B
Gate Source Driver
Gate Source Driver
Gate Source Driver
Gate Source Driver
Gate Source Driver
Gate Source Driver
LC-37HV4E
32
DESCRIPTION OF SCHEMATIC DIAGRAM
VOLTAGE MEASUREMENT CONDITION:
1. When the exclusive-use AC adapter is used, the colour
bar signal of colour bar generator for service is input to
get the normal screen. When the audio is minimized,
the voltage value is measured with the 20 k
get the normal screen. When the audio is minimized,
the voltage value is measured with the 20 k
Ω
/V tester.
INDICATION OF RESISTOR & CAPACITOR:
RESISTOR
1. The unit of resistance “
1. The unit of resistance “
Ω
” is omitted.
(K=k
Ω
=1000
Ω
, M=M
Ω
).
2. All resistors are ± 5%, unless otherwise noted.
(J= ± 5%, F= ± 1%, D= ± 0.5%)
3. All resistors are Carbon type, unless otherwise noted.
C
: Solid
W
: Cement
S
: Oxide Film
T
: Special
N
: Metal Coating
CAPACITOR
1. All capacitors are mF, unless otherwise noted.
1. All capacitors are mF, unless otherwise noted.
(P=pF=mmF).
2. All capacitors are Ceramic type, unless otherwise
noted.
(ML) : Mylar
(ML) : Mylar
(TA) : Tantalum
(PF) : Polypro Film
(ST) : Styrol
CAUTION:
This circuit diagram is original one, therefore there may be a
slight difference from yours.
slight difference from yours.
IMPORTANT SAFETY NOTICE:
PARTS MARKED WITH “
å
”
( )ARE
IMPORTANT FOR MAINTAINING THE SAFETY OF
THE SET. BE SURE TO REPLACE THESE PARTS
WITH SPECIFIED ONES FOR MAINTAINING THE
SAFETY AND PERFORMANCE OF THE SET.
THE SET. BE SURE TO REPLACE THESE PARTS
WITH SPECIFIED ONES FOR MAINTAINING THE
SAFETY AND PERFORMANCE OF THE SET.
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