LG 32LH7000 Service Manual

4) Updating is staring.
5) Fishing the version uploading, you have to put USB stick
and “AC Power” off.
6) After putting “AC Power” on and check updated version
on your TV.
* If downloading version is more high than your TV have, TV
can lost all channel data. In this case, you have to
channel recover. if all channel data is cleared, you didn’t
have a DTV/ATV test on production line.
* After downloading, have to adjust TOOL
OPTION again.
1) Push "IN-START" key in service remote controller 
2)...

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* Connecting picture of the measuring instrument
(On Automatic control )
Inside PATTERN is used when W/B is controlled. Connect to
auto controller or push Adjustment R/C POWER ON ->
Enter the mode of White-Balance, the pattern will come out.
*Auto-control interface and directions
1) Adjust in the place where the influx of light like floodlight
around is blocked. (illumination is...

* Edid data and Model option download (RS232)
- Manual Download
* Caution
Use the proper signal cable for EDID Download
- Analog EDID : Pin3 exists
- Digital EDID : Pin3 exists
(1) Analog Data 128Byte (2Bi)
(2) DIGITAL DATA(HDMI-1/2/3/4) 256Byte* Detail EDID Options are below
ÃProduct ID
ÄSerial No: Controlled on production line.
ÅMonth, Year : Controlled on production line:
ex) Monthly : ‘09’ -> ‘09’
Year : ‘2006’ -> ‘10’
ÆModel Name(Hex):
ÇChecksum: Changeable by total EDID data.
ÈVendor...

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Only for training and service purposes
5. Serial number D/L
• press “Power on” key of service remocon.
(Baud rate : 115200 bps)
• Connect RS232 Signal Cable to RS-232 Jack.
• Write Serial number by use RS-232.
• Must check the serial number at the Diagnostics of SET UP
menu. (Refer to below).
5.1. Signal TABLE
CMD : A0h
LENGTH : 85~94h (1~16 bytes)
ADH : EEPROM Sub Address high (00~1F)
ADL : EEPROM Sub Address low...

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1. TV/CATV doesn’t display
TROUBLESHOOTING
2. DTV doesn’t display
Ch eck th e  o u tp u t  d ata o f IC104 in  th e Jack 
Bo ard  Pin 52.  
Can  yo u  see t h e n o rmal sign al?NOCo u l d  yo u  measu re  vo ltag e o f  IC104 in  the 
Jack Bo ar d  & IIC lin es?
Ar e they  all normal?NOYo u  sh ou ld ch eck p ow er lin e 
& IIC li nes.
YES
Yo u  sh ou ld rep l ace Jack Bo ard...

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Only for training and service purposes- 16 -
3. AV 1/2 doesn’t display
Ch eck JK 200, JK20 1
Can  yo u  see t h e n o rmal  w avefo rm?NOJK20 0, JK20 1 ma y h ave p r o b lem. Rep l ace th is 
Jack.
Ch eck th e o u t p u t   o f  Main IC(IC100).
Esp ecially  yo u  sh o u ld  ch eck 
The  H,V s ync  and c l oc k .
Can  yo u  see t h e n o rmal  w avefo rm?
YES
NOAf t er ch ec kin g  th e Pow er of Main  IC(IC100) yo u...

LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. 
Only for training and service purposes- 17 -
5. RGB PC doesn’t display
Ch eck P30 0 ,
Can  yo u  see t h e n o rmal  w avefo rm?NOJP300
ma y h ave p r o b lem. Rep l ace th is Jack.
Ch eck th e in pu t o f  RGB  Au d i o  
sw itch (IC405 in  th e Jack Bo ard ) ,
Can  yo u  see t h e n o rmal  w avefo rm?
Ch eck th e o u t p u t  o f RGB  Au d i o 
sw itch (IC405 in  th e Jack Bo ard ) ,
Can  yo u  see t h e n o rmal  w avefo...

- 18 -LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. 
Only for training and service purposes
6. HDMI doesn’t display
Check input c onnect  JK600,  JK601, JK602, 
JK60 3
Can  yo u  see t h e n o rmal  w avefo rm?
Ch eck DD C c o mmu n i cation  lin es(IC600, 
IC601)
Ch eck th e in pu t o f  HDMI Sw itch (IC600)
Th i s sign al is  TMDS.
Can  yo u  see t h e n o rmal  w avefo rm?
YES
YES
NOJK60 0, JK60 1, JK602, JK 603
ma y h ave p r o b lem. Rep l ace th is Jack.
Ch eck th...

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BLOCK DIAGRAM
RGB COMPONENT
F-SCART
AV3
CLK,ERR,SYN,DATA[0]
CVBS, Y/C
DDR2 SDRAM
(256MB)
IC300NAND Flash
HYNIX
IC402
URSA_C/D[10bit]USB
Digital amp
(NTP3100)
IC701 YPbPr
      CVBS
CVBS
I2S
PC RGB, H/V SYNCFHD 100Hz
Panel
74LVC541A
Buffer
IC502
CI Slot
 (P500)
74LCX244
Buffer
IC501
Address[0:7]CVBS
URSA_A/B[10bit]
Host Address[0:7]DDR2 Data[0:15]
DDR2 SDRAM
(128MB)
IC301
DDR2...

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Only for training and service purposes
300
200
400
530
540
820
550
830
570
A5
801
805
804
803
802
806
900
910
120
560
122
123
301
310
500
580
A10
A2
510
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...