DOWNLOAD Sharp LC-22SV2E (serv.man2) Service Manual ↓ Size: 7.47 MB | Pages: 84 in PDF or view online for FREE

Model
LC-22SV2E (serv.man2)
Pages
84
Size
7.47 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
lc-22sv2e-sm2.pdf
Date
PREV: Sharp LC-22SV2E Service Manual / Specification

Sharp LC-22SV2E (serv.man2) Service Manual ▷ View online

25
LC-22SV2E
Check all the settins microprocessor's adjust process menu.
Is the pin (53) of 
IC2001 in the 
"L" state?
Is output at pins
(26) and (27) of 
IC1901 normal?
Is output at pins
(1) and (7) of 
IC1903 normal?
Is output at pins 
(8) and (12) of 
IC3305 normal?
Muting effect is 
on. Check the 
SMUTE line.
Check IC1901 
and its
peripheral parts.
Is the pin (5) of 
IC3305 in the 
"H" state?
Muting effect is 
on. Check the 
SSTBY line.
Check IC1903 
and its
peripheral parts.
Check IC3305 
and its
peripheral parts.
Check front 
speaker and 
connection 
cable.
Is the pin (52) of 
IC2001 in the 
"L" state?
Is output at pins
(24) and (25) of 
IC1901 normal?
Is output at pins
(1) and (7) of 
IC304 normal?
Check J2204 
(Headphones).
Muting effect is 
on. Check the 
MP-MUTE line.
Check IC1901 
and its
peripheral parts.
Check IC304 
and its
peripheral parts.
Is output at pins
(37) and (38) of 
IC1901 normal?
Is output at pins
(1) and (7) of 
IC1902 normal?
Check IC1901 
and its
peripheral parts.
Check IC1902 
and its
peripheral parts.
Check SCART 
periphery parts.
Check IC1901 
and its
periphery parts.
Check J3902, 
J3903 and their 
periphery parts.
Is output at pin
(11) of tuner
normal?
Is input at pins
(67) and (69) of 
IC1901 normal?
Check the tuner 
and its
peripheral parts.
Check SIF1 and 
SIF2 line  and 
their peripheral 
parts.
Is output at pins
(33) and (34) of 
IC1901 normal?
Is output at pins
(1) and (7) of 
IC3500 normal?
Check IC1901 
and its
peripheral parts.
Check IC3500 
and its
peripheral parts.
No sound
No sound 
from front 
speakers
No sound 
from 
headphone
TV sound 
failure
No sound from 
RCA output line
Yes
No
No
No
Yes
Yes
Yes
No sound 
from SCART
output line
Yes
No
No
Yes
No
Yes
Yes
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
TROUBLE SHOOTING TABLE
 (Continued)
26
8
7
10
9
6
5
4
3
2
1
A
B 
C
D
E
F
G
H
LC-22SV2E
CHASSIS LAYOUT
DIGITAL Unit
MAIN Unit
R/C, LED Unit
OPERATION Unit
27
17
16
19
18
15
14
13
12
11
10
LC-22SV2E
INVERTER Unit
28
6
5
4
3
2
1
A
B
C
D
E
F
G
H
LC-22SV2E
BLOCK DIAGRAM 1/2
DIGTAL BLOCK DIAGRAM
TO MAIN
(MA)
SC401
SYNC
SEPARATER
TO MAIN
IC401
(ME)
SC402
VPC
SCALLER
LCD
LCD
IC801
IC4101
CONTROLER
PANEL
IC4561
GRADIATION
POWER SUPPLY
IC4703~IC4710
TO MAIN
(MC)
SC4701
DAC
IC4701
BIAS
IC4702
IC4711
(SIG_VCC)
3.3V
+3.3V
(B13V1A)
3.3V
+3.3V
REG
REG
IC4713
IC4908
2.5V
6V
13V
REG
+2.5V
REG
REG
13V
IC4909
IC4557
IC4569
IC4570
5V
REG
+5V
34V
IC4503
REG
+34V
IC4565
3.3V
REG
+3.3V
-8V
IC4504
REG
-8V
IC4568
2.5V
REG
+2.5V
IC4104
V_AV1
V1_S C
V1_I N
V2_V
FSW1
V2V0
V2V0
CSYNC
Y/UV
TEXT RGB
SCALLER CONTROL
SCSB,SCK,SSI,SRDYB,SSO
OSD CONTROL
OSD R/G/B,CK,BLK,HD,VD
G/A CONTROL
MP_CS,DA,CLK
OFL
RGB
ST
R/G/ B
COMMON
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