DOWNLOAD LG 37LV355H-ZA (CHASSIS:LD0AZ) Service Manual ↓ Size: 10.08 MB | Pages: 62 in PDF or view online for FREE

Model
37LV355H-ZA (CHASSIS:LD0AZ)
Pages
62
Size
10.08 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
37lv355h-za-chassis-ld0az.pdf
Date
PREV: LG 37LV355H-TA (CHASSIS:LB0AZ) Service Manual

LG 37LV355H-ZA (CHASSIS:LD0AZ) Service Manual ▷ View online

THERMAL
THE    SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE    SYMBOL MARK OF THE SCHEMETIC.
D2201
A1
C
A2
C2214
22uF
16V
+12V
+3.5V_ST
C2209
22uF
16V
R2218
10K
EXT_12V
CLOCK_SDA
CLOCK_SCL
IC2200
MP4460DQ-LF-Z
PSU
3
EN
2
SW_2
4
COMP
1
SW_1
5
FB
6
GND
7
FREQ
8
VIN_1
9
VIN_2
10
BST
11
EP_GND
R2204
200K
1/8W
1%
PSU
C2202
0.01uF
50V
C2208
3.3uF
50V
PSU
IC2201
MP2305DS
3
SW
2
IN
4
GND
1
BS
5
FB
6
COMP
7
EN
8
SS
C2201
0.47uF
25V
R2203
100K
OPT
R2217
4.7K
R2225
22
+12V
R2214
4.7K
C2213
22uF
16V
C2210
0.1uF
50V
PSU
R2227
4.7K
C2200
150pF
50V
PSU
EXT5V_CTRL
C2206
0.1uF
50V
R2201
150K
PSU
EXT12V_CTRL
L2201
22UH
PSU
X2200
32.768KHz
+12V/+15V
IC2202
MP5000DQ
3
ENABLE/FAULT
2
DV/DT
4
I-LIMIT
1
GND
5
NC
6
SOURCE_1
7
SOURCE_2
8
SOURCE_3
9
SOURCE_4
10
SOURCE_5
11
VCC
+12V
R2209
1K
R2212
10K
1/16W
1%
PSU
+3.5V_ST
M2200
BATTERY
1
2
L2200
CB3216PA501E
LIPS
D2200
MBRA340T3G
PSU
R2205
22
PSU
R2215
43
C2207
0.1uF
50V
PSU
C2215
0.1uF
50V
R2221
1K
C2211
470pF
50V
R2202
100K
PSU
C2212
1uF
16V
C2204
22uF
25V
PSU
R2206
12.4K
IC2204
M41T81
3
VBAT
2
XO
4
VSS
1
XI
5
SDA
6
SCL
7
IRQ/FT/OUT/SQW
8
VCC
L2202
22UH
EXT_PWR_DET
C2217
2pF
50V
R2226
22
L2204
CB3216PA501E
R2211
270K
1/16W
1%
PSU
R2207
56K
R2210
20K
1/16W
1%
PSU
L2203
CB3216PA501E
+24V
Q2201
2SC3875S(ALY)
E
B
C
R2208
10K
C2205
2700pF
50V
EXT_5V
C2216
2pF
50V
Q2200
2SC3875S(ALY)
E
B
C
+3.5V_ST
RTC_INT
R2213
1K
C2203
0.1uF
50V
PSU
C2219
0.1uF
16V
R2216
1K
R2200
18K
PSU
Switching noise reducing [MPS recommend]
close to pin
5V/12V EXT PowerOut
(For External power)
DC DC CONVERTER +12V
$0.21
REAL TIME CLOCK
Contents of LCD TV Standard Repair Process
No.
Error symptom (High category)
Error symptom (Mid category)
Page
Remarks
1
A. Video error
No video/Normal audio 
1
2 
No video/No audio
2
3
Video error, video lag/stop
3
4
Color error
4
5
Vertical/Horizontal bar, residual image, 
light spot, external device color error
5
6
B. Power error
No power
6
7
Off when on, off while viewing, power auto 
on/off
7
8
C. Audio error
No audio/Normal video  
8
9
Wrecked audio/discontinuation/noise
9
10
D. Function error
No response in remote controller, key error, 
recording error, memory error
10
11
External device recognition error 
11
12
E. Noise
Circuit noise, mechanical noise
12
13
F. Exterior error
Exterior defect
13
1.  Trouble Shooting
Normal 
audio
Y
N
Move to No 
video/No audio
No video
Normal audio
Check Back Light
On with naked eye
On
Y
N
Check Main Board
3.5V,12V,3.3V,
1.26V, 1.5V etc.
Normal 
voltage
Y
N
Replace T-con 
Board or module
Repair Power 
Board or parts
Check Power Board 24V,12V,3.5V output
Normal
voltage
Y
Replace Inverter 
or module
N
Repair Power 
Board or parts
End
Always check & record S/W Version and White 
Balance value before replacing the Main Board
Replace Main Board 
Re-enter White Balance value
※Precaution
Established
date 
Standard Repair Process
Revised date 
1/13
LCD  TV
Error
symptom
A. Video error
No video/ Normal audio 
☞A4
☞A1
☞A2
☞A28
☞A7 & A3
First of all, Check whether all of cables between board is inserted properly or not.
(Main B/D↔ Power B/D, LVDS Cable,Speaker Cable,IR B/D Cable,,,)
1
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