DOWNLOAD LG 32LD333H (CHASSIS:LA06H) Service Manual ↓ Size: 3.69 MB | Pages: 62 in PDF or view online for FREE

Model
32LD333H (CHASSIS:LA06H)
Pages
62
Size
3.69 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
32ld333h-chassis-la06h.pdf
Date
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LG 32LD333H (CHASSIS:LA06H) Service Manual ▷ View online

- 17 -
10.3 b_LAN  Main board Check  
10.3.1 Overview   
It is LNET RF modem  & FTG card 
10.3.2 Equipment    
1) b_LAN Checker:  UTC-1000 (with Cable accessory) 
2) Computer(for test result monitoring) 
3) Connection JIG 
10.3.3 Equipnent connection map & b_LAN Check  
4) Check 
=========================================
1. Setting Procedure
1) Setting JIG
(1) Connect UTC-1000 Equipment to JIG device as a like left picture 
- Connection Line:  
UTC-1000 TOP1 <--> Game port(RJ21) 
-> TV-LINK CFG (Phone Jack)
UTC-1000 TOP2 <--> JIG 11pin Connection 
UTC-1000 RF1  <--> b_LAN RF IN 
UTC-1000 LAN  <--> PC LAN Port 
2. Working procedure
1) Connection
UTC-1000 LAN <--> PC LAN Port 
UTC-1000 TOP1 <--> Game port(RJ21) 
-> TV-LINK CFG (Phone Jack) 
UTC-1000 RF1 <--> b_LAN RF IN 
2) Power on JIG
3) Test Start
UTC-1000 TOP2 <--> JIG 11pin Connection 
4) Checking b-LAN MAC Address
Check whether it is same their address numbers or not  between B-LAN Label and on the pc address numbers. 
TOP1 
TOP2 
RF1 
Pow er 
TOP
2
AC
110V
UTC-1000 
LAN PORT
Computer LA N 
PORT 
b_LAN RF IN 
RJ12  ô 
Phone Jack (2)
- 18 -
* Checking JIG contents
1. Check whether displaying all “Pass” or not  at the number 3.4.6.7.9 contents of UTC-1000 on the PC 
2. Check  “Version 6.0” of the 1. b_LAN Application version  
3. Check whether it is same their address numbers or  not between B-LAN Label and  2. MAC Address on the pc. 
11. Serial number download.  
Connect Bar Code scan equipment and TV set by RS-232C cable. 
1)  E2PROM Data Write  
2) E2PROM Data Read 
- 19 -
300
500
510
120
A10
200
530
550
810
900
910
540
521
400
A2
LV1
EXPLODED VIEW
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These
parts are identified by       in the Schematic Diagram and EXPLODED VIEW. 
It  is  essential  that  these  special  safety  parts  should  be  replaced  with  the  same  components  as
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards. 
Do not modify the original design without permission of manufacturer.
IMPORTANT SAFETY NOTICE
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.
+12V/+15V
0 . 1 u F
50V
C467
+24V
10K
R430
+3.5V_ST
10K
R411
L417
100pF
50V
OPT
C482
22uF
10V
C472
4.7K
1%
R461
100uF
16V
C401
+3.5V_ST
100
R415
POWER_18_INV_CTL
10K
R456
1/10W
10
1%
R452
+1.5V_DDR
+2.5V_Normal
10K
R421
1/16W
5.1K
5%
R447
PD_+12V
0
R441
MP2212DN
IC403
3
IN
2
GND
4
BS
1
FB
5
VCC
6
SW_1
7
SW_2
8
EN/SYNC
POWER_ON/OFF2_2
RL_ON
0 . 1 u F
16V
C408
POWER_ON/OFF1
10K
R401
NR8040T3R6N
3.6uH
L423
POWER_ON/OFF2_1
0 . 1 u F
16V
C432
PANEL_VCC
100pF
50V
C439
10K
1%
R467
33K
1%
R416
0 . 1 u F
16V
C455
22K 1%
R442
100uF
16V
C402
0 . 1 u F
16V
C407
12K
1%
PD_+12V
R448
NR8040T3R6N
3.6uH
L421
A_DIM
+12V/+15V
0 . 1 u F
16V
C406
10K
1%
R457
24K 1%
R444
PWM_DIM
10K
R464
100pF
50V
C463
4.7K
R406
CIC21J501NE
L420
2SC3052
Q406
E
B
C
10uF
16V
OPT
C442
1
R473
2SC3052
Q401
E
B
C
MLB-201209-0120P-N2
L404
6.2K
1%
R417
ERROR_OUT
6.8K
OPT
R418
+5V_USB
+12V/+15V
100pF
50V
OPT
C429
L412
+12V/+15V
+3.3V_Normal
2SC3052
Q407
E
B
C
12K
R458
0 . 1 u F
C410
0 . 1 u F
16V
C477
27K
1%
R460
22uF
10V
C453
1uF
10V
C444
0
R412
POWER_16_GND
L416
0 . 1 u F
50V
C418
+3.5V_ST
+12V/+15V
L401
51K
5%
R465
NR8040T3R6N
3.6uH
L422
0 . 0 1 u F
25V
C436
POWER_DET
OPC_OUT
22K
R435
1.5K
1%
R466
AOZ1073AIL
IC405
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
100pF
50V
OPT
C423
10uF
25V
C458
2200pF
C466
100pF
50V
OPT
C427
22uF
10V
C430
1uF
25V
C451
OPT
+5V_Normal
0 . 1 u F
16V
C424
+1.26V_VDDC
0 . 1 u F
16V
C473
MLB-201209-0120P-N2
L407
10uF
25V
C457
0 . 1 u F
16V
C416
OPT
+3.3V_Normal
0 . 1 u F
50V
C448
0
R455
22uF
10V
C461
0
R478
OPT
0 . 1 u F
C456
+3.5V_ST
0
POWER_24_PWM_DIM
R472
0
R471
POWER_22_PWM_DIM
POWER_ON/OFF2_2
10K
R463
OPT
0 . 1 u F
16V
C404
+24V
1/8W
75K
1%
R432
+3.3V_Normal
10uF
10V
C403
10uF
25V
C405
68uF
35V
C426
2SC3052
Q405
E
B
C
10uF
25V
C459
0 . 1 u F
16V
C438
INV_CTL
+12V/+15V
L413
1uF
10V
C465
PANEL_CTL
001:AJ25;016:AD13
10K
R427
MLB-201209-0120P-N2
L402
0 . 1 u F
C476
0.1uF
16V
OPT
C412
1/10W
10
1%
R436
1/10W
11K
5%
R449
0 . 1 u F
16V
C428
+3.5V_ST
2200pF
C464
1uF
50V
C414
+3.5V_ST
+3.5V_ST
9.1K
R454
10K
R426
OPT
NR8040T3R6N
3.6uH
L406
10uF
25V
C460
POWER_ON/OFF2_1
0 . 1 u F
16V
C440
MP2212DN
IC407
3
IN
2
GND
4
BS
1
FB
5
VCC
6
SW_1
7
SW_2
8
EN/SYNC
10K
R410
30K
1%
OPT
R446
10K
1%
R462
22K
R431
100
POWER_24_INV_CTL
R425
NR8040T3R6N
3.6uH
L415
RT1P141C-T112
Q402
1
2
3
MP8706EN-C247-LF-Z
IC401
3
SW_2
2
SW_1
4
BST
1
IN
5
EN/SYNC
6
FB
7
VCC
8
GND
1uF
25V
OPT
C419
10K
R445
NCP803SN293
IC408
1
GND
3
VCC
2
RESET
10K
R459
100
R480
OPT
4 . 7 u F
16V
C443
22uF
10V
C420
22uF
10V
C469
22uF
10V
C471
FW20020-24S
P403
OPT
19
14
9
4
18
13
8
3
17
12
7
2
16
11
6
1
20
15
10
5
21
22
23
24
0
POWER_18_A_DIM
R451
0
R453
POWER_20_A_DIM
1uF
25V
OPT
C484
V_SYNC
0
POWER_20_PWM_DIM
R484
CIC21J501NE
L424
3 . 3 V _ b e a d
0 . 1 u F
16V
C485
0
POWER_22_A_DIM
R485
+3.3V_Normal
4.7K
R486
OPT
22
R487
100K
R488
47K
R429
0
OPT
R477
0
POWER_24_GND
R475
0
R476
POWER_23_GND
1K
R419
0
OPT
R422
0
OPT
R470
0 . 1 u F
C486
27K
1%
PD_+3.5V
R447-*1
1K
1%
PD_+3.5V
R450
100
R402
+24V
AZ2940D-2.5TRE1
IC402
2
GND
3
VOUT
1
VIN
AO3407A
Q409
G
D
S
100K
R404
OPT
NCP803SN293
IC409
OPT
1
GND
3
VCC
2
RESET
24K
1%
R482-*1
POWER_+20V
FM20020-24
P404
19
14
9
4
18
13
8
3
17
12
7
2
16
11
6
1
20
15
10
5
21
22
23
24
25
SMAW200-H24S2
OPT
P401
19
12V
14
GND
9
3.5V
4
24V
18
INV ON
13
GND
8
GND
3
24V
17
12V
12
3.5V
7
GND
2
24V
16
GND/V-sync
11
3.5V
6
GND
1
PWR ON
20
A.DIM
15
GND
10
3.5V
5
GND
21
12V
22
P.DIM1
23
GND/P.DIM2
24
Err OUT
25
0
R479
33K
R439
5.6K
R440
24K
1%
R482
POWER_+24V
4.3K
1%
R403
POWER_+24V
5.1K
5%
R403-*1
POWER_+20V
0 . 1 u F
C474
2.2K
R405
OPT
2.2K
R407
OPT
22uF
10V
C411
OPT
100
POWER_20_ERROR_OUT
R437
100
R420
POWER_24_ERROR_OUT
3.9K
C419-*1
PWM_PULL-DOWN
5.6K
1%
R403-*2
POWER_+18.5V
24K
1%
POWER_+18.5V
R482-*2
+3.5V_ST
2.2K
R408
10K
R409
+3.5V_ST
+3.5V_ST
10K
R413
+3.5V_ST
10K
R414
10K
R423
+3.5V_ST
51K
5%
R494
NR8040T3R6N
3.6uH
L431
22uF
10V
C491
AOZ1072AI
IC410
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
10uF
25V
C488
0 . 1 u F
16V
C492
L430
+3.5V_ST
100pF
50V
OPT
C490
2200pF
C489
POWER_ON/OFF2_2
10K
R491
10uF
25V
C487
1.5K
1%
R493
+12V/+15V
10K
R490
12K
R489
10K
1%
R492
+5V_TUNER
026:Y7
10K
R438
+3.5V_ST
SCAN_BLK1/OPC_OUT
SCAN_BLK2
AOZ1073AIL
IC406
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
LX_1
8
LX_2
1/10W
0
5%
L424-*1
3.3V_REGISTER
1/16W
12K
1%
R448-*1
12Kohm
1/16W
5.1K
5%
R447-*2
5.1Kohm
+5V_USB
Power_DET
R2
+5V_Normal
INV_ON
R2
3A
PWM_DIM
o r   L I P S
+2.5V/+1.8V
22
Placed on SMD-TOP
PIN No
V o u t = 0 . 8 * ( 1 + R 1 / R 2 )
3A
Placed on SMD-TOP
R1
V o u t = 0 . 8 * ( 1 + R 1 / R 2 )
+5V_USB
PANEL_POWER
AUO
VBR-A
C IN
Vd=550mV
1074 mA
S7M DDR 1.5V
26/32/52:PWM
E r r _ o u t
3A
1934 mA
V o u t = ( 1 + R 1 / R 2 ) * 0 . 8
20
S T _ 3 . 5 V - - >   3 . 3 7 5 V
Placed on SMD-TOP
E r r _ o u t
R2
Placed on SMD-TOP
R1
New item
R e p l a c e d   P a r t
R1
INV_ON
PWM_DIM
SHARP
INV_ON
300 mA
18
R1
PWM_DIM
R1
20V-->3.51V
24V-->3.64V
C l o s e   t o   I C
V o u t = ( 1 + R 1 / R 2 ) * 0 . 8
24
NC
FROM LIPS & POWER B/D
MAX 2000mA
R2
A-DIM
2026 mA
C l o s e   t o   I C
C IN
12V-->3.58V
V o u t = 0 . 8 * ( 1 + R 1 / R 2 )
R e p l a c e d   P a r t
S 7 M   c o r e   1 . 2 6 V   v o l t
3A
+3.3V_Normal
MAX 1A
NC
CMO
INV_ON
R2
<OS MODULE PIN MAP>
4
23
IPS-@
+ 3 . 5 V _ S T   - >   3 . 3 7 5 V
INV_ON
E r r _ o u t
GND
GND
GND
GND
52/60:ERROR
26/32HD:NC
GND
PWM_DIM
NC
(PSU)
(PSU)
(PSU)
(PSU)
Only for 32/37LED MODEL
1 8 . 5 V - - > 3 . 5 V
60:NC
26/32/52:GND
60:PWM
LGD(PSU)
+5V_TUNER
R1
V o u t = 0 . 8 * ( 1 + R 1 / R 2 )
2A
R2
37LD320H
Power
2 0 1 0 . 1 2 . 2 2
3A
u s i n g   3 2 "   n e w   p a n n e l
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