Sharp LC-32GA5E (serv.man18) Service Manual ▷ View online
25
LC-26GA5E
LC-32GA5E
LC-32GA5E
LC-26GA5E
LC-32GA5E
LC-32GA5E
4. No sound (1 / 2)
No sound comes out
No sound comes out at UHF/VHF reception?
No external input sound scart 1 and Ext 3
comes out
Is the output signal pin 123 SPL and pin 124 SP
R
NO
Check IC1001 and
<Scart 1>
of IC1001 as specified?
peripheral circuits
Is the LI1 audio signal inputted from pin (6) o
f
input terminal SC1451 to pin 114 of IC1001?
YES
Is the RI1 audio signal inputted from pin (2) o
f
Is the output signal pin 1 and pin 7 of IC1351
NO
Check IC 1351 and
input terminal SC1451 to pin 114 of IC1001?
as specified?
peripheral circuits
<Ext 3 >
YES
Is the LI2 audio signal inputted from J401
Is the input signal pin 11 and pin 15 of IC1301
NO
Check J 402
connector to pin 116 of IC 1001 ?
as specified?
Is the RI2 audio signal inputted from J401
YES
connector to pin 115 of IC 1001 ?
Is the output signal pin 26 and pin 27 of IC1301
NO
Check IC 1301 and
YE
S
as specified?
peripheral circuits
YES
Check speakers
No external input sound scart 2 and Ex 5
comes out
<Scart 2>
No external input sound Ex 4 comes out
Is the L audio signal inputted from pin (6) o
f
input terminal SC1452 to pin 15 of IC401?
Is the L1 audio signal inputted from pin (2) o
f
Is the inputted signal from J1901 to
YES
input terminal SC1452 to pin 2 of IC1401?
input terminals 4 and 11 of IC1401?
<Ext 5>
N
O
Is the L audio signal inputted from J402
connector to pin 12 of IC 1401 ?
Check Components Unit Board and peripheral parts
Is the R audio signal inputted from J402
connector to pin 1 of IC 1401 ?
YE
S
Check IC1401 and
NO
Is the output signal pin 3 and pin 13 of IC1401
peripheral circuits
as specified?
YE
S
Is the input signal pin 117 RI3 and pin 118 LI3
of IC1001 as specified?
YES
26
LC-26GA5E
LC-32GA5E
LC-32GA5E
LC-26GA5E
LC-32GA5E
LC-32GA5E
5. No sound (2 / 2)
No sound comes out
No external output
No external output sound
No external output
sound scart 1 comes out
scart 2 comes out
sound Ext 3 comes out
A
re audio output terminal
No
Check signal 2S-mute
No
A
re audio output terminal o
f
A
re audio output terminal o
f
No
Check signal 2S-mute
of connector SC1451 pins (1)
and SS mute and
connector Sc1452 as specified ?
connector J 401 as specified ?
and SS mute and
and (3) as specified?
peripheral circuit
Yes
Yes
peripherical circuit
Yes
A
re audio output pins 122 an
d
No
Check IC 1001 and
A
re audio output terminal of
No
Check IC1402 and
121 of IC1001 as specified ?
peripheral circuits
IC 1402 pins 1 and 7 as specified?
peripheral components
Yes
A
re audio output terminal o
f
No
Check IC 1001 and
IC 1001 out R(119) and out L (120)
peripheral circuits
as specified ?
Switch pin 6 of IC1201 from 0,5 V in TV
No
Check Q1203, Q1202, D1205
mode to 5V in radio mode?
and peripherical components
Yes
Check IC 1201 and peripherical circuits
No sound comes out in radio reception
27
LC-26GA5E
LC-32GA5E
LC-32GA5E
LC-26GA5E
LC-32GA5E
LC-32GA5E
CHASSIS LAYOUT
Main Unit Layout QPWBXC656WJN1
1
I
H
G
F
E
D
C
B
A
2
3
4
5
6
7
IC2801
SC2801
IC2202
X2201
IC2201
P2205
P2206
IC2207
IC2210
IC1801
IC2203
IC1351
J402
IC2206
IC6004
P2203
P2204
IC2212
IC1003
X6002
J401
IC1002
IC1006
P1004
SF1201
SC1451
TU1201
Q1202
IC1404
IC1004
P1001
P2201
P1006
IC704
P1002
P1003
IC1402
IC1301
IC2204
P1401
P1402
P1301
P1403
IC1405
IC1401
IC1302
IC1403
P1005
IC1008
IC1001
IC2205
IC2211
IC6008
SC2201
SC1452
28
LC-26GA5E
LC-32GA5E
LC-32GA5E
LC-26GA5E
LC-32GA5E
LC-32GA5E
1
I
H
G
F
E
D
C
B
A
2
3
4
5
6
7
Operation Unit Layout QPWBXC864WJN1
RC / LED Unit Layout QPWBXC865WJN1
YUV Unit Layout QPWBXC920WJN1
SW4054
VOL -
SW4052
VOL +
SW4055
CH -
SW4053
CH +
SW4051
INPUT
P4050
S4057
P4001
IC4002
RMC4001
D4001
D4002
D4003
IC4001
IC4003
J1901
P1901
P1902
LCD Control Unit Layout QPWBXC919WJN2
IC4602
LUG7710
P7704
LUG7711
SC4651
LUG7707
IC4902
LUG7712
P2006
LUG7713
IC4903
SC4652
LUG7708
IC2004
IC4101
P2001
P2005
LUG7714
P2004
P7707
P7705
LUG7709
IC2008
SC4601
IC4603
IC7708
IC7701
IC7704
IC7706
IC7703
IC7709
IC7702
IC7711
IC4108
IC4114
IC4109
IC4116
Q4110
IC2014
IC2015
IC2016
IC2001
IC2010
IC2019
IC2017
IC2006
IC4107
IC4102
IC4901
IC4601
IC4501
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