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Model
32LV3700-ZC 32LV370S 32LV375G-ZC 32LV375S-ZC 32LV375W-ZC (CHASSIS:LD12B)
Pages
74
Size
12.16 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
32lv3700-zc-32lv370s-32lv375g-zc-32lv375s-zc-32lv3.pdf
Date

LG 32LV3700-ZC / 32LV370S / 32LV375G-ZC / 32LV375S-ZC / 32LV375W-ZC (CHASSIS:LD12B) Service Manual ▷ View online

- 9 -
3.3. LAN PORT INSPECTION(PING TEST)
Connect SET -> LAN port == PC -> LAN Port
(1) Equipment setting
1) Play the LAN Port Test PROGRAM.
2) Input IP set up for an inspection to Test 
Program.
*IP Number : 12.12.2.2
(2) LAN PORT inspection  (PING TEST)
1) Play the LAN Port Test Program.
2) Connect each other LAN Port Jack.
3) Play Test (F9) button and confirm OK Message.
4) Remove LAN CABLE
3.4. Model name & serial number download
(1) Model name & Serial number D/L
A
Press “Power on” key of service remote control.(Baud
rate : 115200 bps)
A
Connect RS232 Signal Cable to RS-232 Jack.
A
Write Serial number by use RS-232.
A
Must check the serial number at Instart menu. 
(2) Method & notice
A. Serial number D/L is using of scan equipment.
B. Setting of scan equipment operated by Manufacturing
Technology Group.
C. Serial number D/L must be conformed when it is produced
in production line, because serial number D/L is mandatory
by D-book 4.0
* Manual Download (Model Name and Serial Number)
If the TV set is downloaded by OTA or service man,
sometimes model name or serial number is initialized.(Not
always)
There is impossible to download by bar code scan, so It
need Manual download.
a. Press the ‘instart’ key of ADJ remote control.
b. Go to the menu ‘5.Model Number D/L’ like below photo.
c. Input the Factory model name(ex 42LD450-ZA) or Serial
number like photo.
d. Check the model name Instart menu -> Factory name
displayed (ex 32LV3700-ZA)
e. Check the Diagnostics (DTV country only) -> Buyer model
displayed (ex 32LV3700)
4. Manual Adjustment
4.1. EDID(The Extended Display Identification
Data)/DDC(Display Data Channel) download
(1) Overview
It is a VESA regulation. A PC or a MNT will display an
optimal resolution through information sharing without any
necessity of user input. It is a realization of “Plug and Play”.
(2) Equipment
- Adjust remote control
- Since embedded EDID data is used, EDID download JIG,
HDMI cable and D-sub cable are not need.
(3)Download method
1) Press Adj. key on the Adj. R/C, then select “12.EDID
D/L”, By pressing Enter key, enter EDID D/L menu.
2) Select [Start] button by pressing Enter key, HDMI1/
HDMI2/ HDMI3/ RGB are Writing and display OK or NG.
(4) EDID DATA
A
HDMI
SET
PC
0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F
0x00 00
FF
FF
FF
FF
FF
FF
00
1E
6D
0x01
01
03
80
10
09
78
0A
EE
91
A3
54
4C
99
26
0x02 0F
50
54
A1
08
00
71
40
81
C0
81
00
81
80
95
00
0x03 90
40
A9
C0
B3
00
02
3A
80
18
71
38
2D
40
58
2C
0x04 45
00
A0
5A
00
00
00
1E
66
21
50
B0
51
00
1B
30
0x05 40
70
36
00
A0
5A
00
00
00
1E
00
00
00
FD
00
39
0x06 3F
1F
52
10
00
0A
20
20
20
20
20
20
0x07
01
ⓔ1
0x00 02
03
26
F1
4E
10
1F
84
13
05
14
03
02
12
20
21
0x01 22
15
01
26
15
07
50
09
57
07
67
0x02
E3
05
03
01
01
1D
80
18
71
1C
16
20
58
2C
0x03 25
00
A0
5A
00
00
00
9E
01
1D
00
80
51
D0
1A
20
0x04 6E
88
55
00
A0
5A
00
00
00
1A
02
3A
80
18
71
38
0x05 2D
40
58
2C
45
00
A0
5A
00
00
00
1E
66
21
50
B0
0x06 51
00
1B
30
40
70
36
00
A0
5A
00
00
00
1E
00
00
0x07 00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
ⓔ2
- 10 -
A
RGB
A
Reference
- HDMI1 ~ HDMI3 / RGB 
- In the data of EDID, bellows may be different by S/W or
Input mode. 
ⓐ Product ID
ⓑ Serial No. : Controlled on product line
ⓒ Month, Year: Controlled on production line:
ex) Monthly : ‘01’ -> ‘01’
Year : ‘2010’ -> ‘14’
ⓓ Model Name(Hex):
ⓔ Checksum: Changeable by total EDID data.
ⓕ Vendor Specific(HDMI)
4.2. White Balance Adjustment
4.2.1. Overview
(1) W/B adj. Objective & How-it-works
(2) Objective: To reduce each Panel’s W/B deviation
(3) How-it-works : When R/G/B gain in the OSD is at 192, it
means the panel is at its Full Dynamic Range. In order to
prevent saturation of Full Dynamic range and data, one of
R/G/B is fixed at 192, and the other two is lowered to find
the desired value. 
(4) Adj. condition : normal temperature
1) Surrounding Temperature : 25 ºC ± 5 ºC
2) Warm-up time: About 5 Min
3) Surrounding Humidity : 20 % ~ 80 %
4.2.2 Equipment
1) Color Analyzer: CA-210 (LED Module : CH 14)
2) Adj. Computer(During auto adj., RS-232C protocol is
needed)
3) Adjust Remote control
4) Video Signal Generator MSPG-925F 720p/204-Gray
(Model:217, Pattern:49)
-> Only when internal pattern is not available
A
Color Analyzer Matrix should be calibrated using CS-1000
4.2.3. Equipment connection MAP
4.2.4. Adj. Command (Protocol)
<Command Format>
- LEN: Number of Data Byte to be sent
- CMD: Command
- VAL: FOS Data value
- CS: Checksum of sent data
- A: Acknowledge
Ex) [Send: JA_00_DD] / [Ack: A_00_okDDX]
A
RS-232C Command used during auto-adj.
Ex) wb 00 00   ->  Begin white balance auto-adj.
wb 00 10   ->  Gain adj.
ja 00 ff   ->  Adj. data
jb 00 c0
...
...
wb 00 1f   -> Gain adj. completed
*(wb 00 20(Start), wb 00 2f(completed)) -> Off-set adj.
wb 00 ff   -> End white balance auto-adj.
0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F
0x00 00
FF
FF
FF
FF
FF
FF
00
1E
6D
0x01
01
03
68
10
09
78
0A
EE
91
A3
54
4C
99
26
0x02 0F
50
54
A1
08
00
71
4F
01
01
01
01
01
01
95
00
0x03 90
40
A9
C0
B3
00
02
3A
80
18
71
38
2D
40
58
2C
0x04 45
00
A0
5A
00
00
00
1E
66
21
50
B0
51
00
1B
30
0x05 40
70
36
00
A0
5A
00
00
00
1E
00
00
00
FD
00
3A
0x06 3E
1E
53
10
00
0A
20
20
20
20
20
20
0x07
01
ⓔ3
Model Name
HEX
EDID Table
DDC Function
ALL
0001
0100
Analog
0001
0100
Digital
MODEL
MODEL NAME(HEX)
all
00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20
INPUT
MODEL NAME(HEX)
HDMI1
67 03 0C 00 10 00 B8 2D
HDMI2
67 03 0C 00 20 00 B8 2D
HDMI3
67 03 0C 00 30 00 B8 2D
RGB
67 03 0C 00 40 00 B8 2D
INPUT
1
2
3
HDMI1
7F
D9
X
HDMI2
7F
C9
X
HDMI3
7F
B9
X
RGB
X
X
46
Co lo r Analyzer
 
Co m p ut er
 
Pat t ern  Generat o r
 
RS -232C 
RS -232C 
RS -232C 
Probe
Signal Source
* If TV internal pattern is used, not needed
LEN
CMD
VAL
CS
RS-232C COMMAND
Explanation
[CMD
ID
DATA]
wb
00
00
Begin White Balance adj.
wb
00
10
Gain adj.(internal white pattern)
wb
00
1f
Gain adj. completed
wb
00
20
Offset adj.(internal white pattern)
wb
00
2f
Offset adj. completed
wb
00
ff
- 11 -
A
Adj. Map
A
3 Command White Balance Adj. Map
A
Infrared Sensor Adj. Map
4.2.5. Adj. method
(1) Auto adj. method
1) Set TV in adj. mode using POWER ON key.
2) Zero calibrate probe then place it on the center of the
Display.
3) Connect Cable (RS-232C)
4) Select mode in adj. Program and begin adjustment.
5) When adj. is complete (OK Sing), check adj. status pre
mode. (Warm, Medium, Cool)
6) Remove probe and RS-232C cable to complete adj.
A
W/B Adj. must begin as start command “wb 00 00” , and
finish as end command “wb 00 ff”, and Adj. offset if need.
(2) Manual adj. method
1) Set TV in Adj. mode using POWER ON
2) Zero Calibrate the probe of Color Analyzer, then place it
on the center of LCD module within 10cm of the surface.
3) Press ADJ key -> EZ adjust using adj. R/C -> 9.White-
Balance then press the cursor to the right (KEY 
G
).
(When KEY(
G
) is pressed 216 Gray internal pattern will
be displayed)
4) One of R Gain / G Gain / B Gain should be fixed at 192,
and the rest will be lowered to meet the desired value.
5) Adj. is performed in COOL, MEDIUM, WARM 3 modes
of color temperature.
A
If internal pattern is not available, use RF input. In EZ
Adj. menu 9.White Balance, you can select one of 2 Test
-pattern: ON, OFF. Default is inner(ON). By selecting
OFF, you can adjust using RF signal in 216 gray pattern.
A
Adj. condition and cautionary items
1) Lighting condition in surrounding area
Surrounding lighting should be lower 10 lux. Try to
isolate adj. area into dark surrounding.
2) Probe location
: Color Analyzer (CA-210) probe should be within
10cm and perpendicular of the module surface (80°~
100°)
3) Aging time
- After Aging Start, Keep the Power ON status during
5 Minutes.
- In case of LCD, Back-light on should be checked
using no signal or Full-white pattern.
4.2.6. Reference (White Balance Adj. coordinate
and temperature)
A
Luminance : 204 Gray
A
Standard color coordinate and temperature using CS-1000
(over 26 inch)
A
Standard color coordinate and temperature using CA-
210(CH 14)
ITEM
Command
Data Range(Hex.) Default(Decimal)
Cmd 1
Cmd 2
Min
Max
Cool
R-Gain
j
g
00
C0
G-Gain
j
h
00
C0
B-Gain
j
i
00
C0
R-Cut
G-Cut
B-Cut
Medium
R-Gain
j
a
00
C0
G-Gain
j
b
00
C0
B-Gain
j
c
00
C0
R-Cut
G-Cut
B-Cut
Warm
R-Gain
j
d
00
C0
G-Gain
j
e
00
C0
B-Gain
j
f
00
C0
R-Cut
G-Cut
Command
SetID R Gain(HEX) G Gain(HEX) B Gain(HEX) 
(lower case ASCII)
CMD1
CMD2
MIN
MAX
MIN
MAX
MIN
MAX
Cool
j
j
00
00
C0
00
C0
00
C0
Medium
j
k
00
00
C0
00
C0
00
C0
Warm
j
l
00
00
C0
00
C0
00
C0
Command
R Gain(HEX) G Gain(HEX) B Gain(HEX) 
(lower case ASCII)
CMD1
CMD2
MIN
MAX
MIN
MAX
MIN
MAX
Cool
1
C
00
C0
00
C0
00
C0
Medium
1
D
00
C0
00
C0
00
C0
Warm
1
E
00
C0
00
C0
00
C0
Mode
Color Coordination
Temp
∆UV
x
y
COOL
0.269
0.273
13000 K
0.0000
MEDIUM
0.285
0.293
9300 K
0.0000
WARM
0.313
0.329
6500 K
0.0000
Mode
Color Coordination
Temp
∆UV
x
y
COOL
0.269 ± 0.002
0.273 ± 0.002 13000 K
0.0000
MEDIUM
0.285 ± 0.002
0.293 ± 0.002
9300 K
0.0000
WARM
0.313 ± 0.002
0.329 ± 0.002
6500 K
0.0000
- 12 -
4.2.7. Edge LED White balance table
A
IOP & Edge LED module change color coordinate because
of aging time.
A
apply under the color coordinate table, for compensated
aging time.
- EDGE LED(LV3700)
4.3. EYE-Q function check
Step 1) Turn on TV
Step 2) Press EYE key of Adj. R/C
Step 3) Cover the Eye Q II sensor on the front of the using
your hand and wait for 6 seconds
Step 4) Confirm that R/G/B value is lower than 10 of the “Raw
Data (Sensor data, Back light)”. If after 6 seconds,
R/G/B value is not lower than 10, replace Eye Q II
sensor.
Step 5) Remove your hand from the Eye Q II sensor and wait
for 6 seconds.
Step 6) Confirm that “ok” pop up. If change is not seen,
replace Eye Q II sensor.
4.4. Option selection per country
(1) Overview
- Option selection is only done for models in Non-EU.
- Applied model: LD12B Chassis applied EU model.
(2) Method
1) Press ADJ key on the Adj. Remote Control, then select
Country Group Menu.
2) Depending on destination, select Country Group Code
04 or Country Group EU then on the lower Country
option, select US, CA, MX. Selection is done using +, -
or 
GF
KEY.
5. Tool Option selection
- Method : Press Adj. key on the Adj. Remote Control, then
select Tool option.
6. Ship-out mode check(In-stop)
After final inspection, press IN-STOP key of the Adj. R/C and
check that the unit goes to Stand-by mode.
7.1. Method
- Check that Power Cord is fully inserted to the SET.
(If loose, re-insert)
- Unit fully inserted Power cord, Antenna cable and A/V
arrive to the auto-check process. 
- Connect D-terminal to AV JACK TESTER
- Auto CONTROLLER(GWS103-4) ON
- Perform GND TEST
- If NG, Buzzer will sound to inform the operator.
- If OK, changeover to I/P check automatically.
(Remove CORD, A/V form AV JACK BOX)
- Perform I/P test
- If NG, Buzzer will sound to inform the operator.
- If OK, Good lamp will lit up and the stopper will allow the
pallet to move on to next process.
7.2. Checkpoint
• TEST voltage
- GND: 1.5 KV/min at 100 mA
- SIGNAL: 3 KV/min at 100 mA
• TEST time: 1 second
• TEST POINT
- GND TEST = POWER CORD GND & SIGNAL CABLE
METAL GND
NEUTRAL
• LEAKAGE CURRENT: At 0.5 mArms
GP2
Aging Time
Cool
Medium
Warm
(Min.)
X
Y
X
Y
X
Y
269
273
285
293
313
329
1
0-2
280
291
296
311
319
340
2
3-5
278
288
294
308
317
338
3
6-9
276
285
292
305
315
335
4
10-15
274
282
290
302
313
332
5
20-35
273
279
289
299
312
329
6
36-49
270
276
287
296
310
326
7
50-79
269
273
286
293
308
323
8
Over 80
269
273
285
293
308
323
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