Panasonic TH-49LFV8U / TH-49LFV8W (serv.man2) Service Manual ▷ View online
INF-9
SECTION 1 SERVICE INFORMATION
<49LFV8U/W>
Item for
No.
Item
Option
Function
Factory
20
AUD GAIN LINEIN
Factory use only. / Don't change.
Factory
21
AUD GAIN HDMI
Factory use only. / Don't change.
Factory
22
AUD GAIN ATV
Factory use only. / Don't change.
Factory
23
AUD GAIN USB
Factory use only. / Don't change.
Factory
24
AUD GAIN USB
Factory use only. / Don't change.
Factory
25
AQ INDEX
49LFV8: 5
55LFV8: 5
Factory use only. / Don't change.
Factory
26
Frame comp. H
0(default)
～ 100, 1step
Factory use only. / Don't change.
Factory
27
Frame comp. V
0(default)
～ 100, 1step
Factory use only. / Don't change.
Service
28
DUMP PQ FROM TV
Press OK
Back up PQ (Data / Setting) to USB flash device.
Service
29
LOAD PQ to TV
Press OK
Import PQ (Data / Setting) from USB flash device.
Service
30
DUMP AQ FROM TV
Press OK
Back up AQ (Data / Setting) to USB flash device.
Service
31
LOAD AQ to TV
Press OK
Import AQ (Data / Setting) from USB flash device.
Service
32
NVM COPY TV to USB
Press OK
Back up user settings to USB flash device.
Service
33
NVM READ USB to TV
Press OK
Import user settings from USB flash device.
Factory
34
PANEL FLIP
Off(default)/On
Factory use only. / Don't change.
Service
35
PANEL LOCAL DIMMING
On(default)/Off
Enable / Disable local dimming control of panel.
(Only use for supported panel)
Factory
36
DEBUG MODE
Off(default)/On
Factory use only. / Don't change.
Factory
37
EDID UPDATE
Press OK
Factory use only.
Don't execute.
Service
38
REGIONTYPE
JP/US/CN/EU
Set selling region.
Service
39
NO SIGNAL INFO
On(default)/Off
Enable / Disable prompt box if there's no signal
Factory
40
AUTO SEARCH TIMER
5(default)
～ 25, 1step
Factory use only. / Don't change.
Factory
41
PS8401 MODE
jitter clean(default)/bypass
Factory use only. / Don't change.
Factory
42
PS8401 EQ SET
10.1dB/6.5dB/7.5dB(default)/8.
6dB/9.2dB
Factory use only. / Don't change.
Factory
43
Card OPS
Disable(default) / Enable
Factory use only. / Don't change.
Factory
44
THERMAL_ERR_
THRESHOLD1
10
～ 100, 1℃ step, 60(default)
Factory use only. / Don't change.
Factory
45
THERMAL_ERR_
THRESHOLD2
10
～ 100, 1℃ step, 70(default)
Factory use only. / Don't change.
Factory
46
EEPROM INIT(mask)
Press OK
Factory use only.
Don't execute.
Factory
47
FACTORY RESET(mask)
Press OK
Factory use only.
Don't execute.
Service
48
EXIT FACTORY
Press OK
Exit Service menu (factory menu).
INF-10
SECTION 1 SERVICE INFORMATION
<49LFV8U/W>
3. 3. Market select setting mode (REGION TYPE)
n
After replacing the A module, this market select setting must be done following to the procedure below.
1. Display the Service mode (Refer to 3.1.).
2. The service mode menu appears on the screen. Select the [38. REGION TYPE] menu with [pq] buttons.
36.
DEBUG MODE
Off
37.
EDID UPDATE
Press OK
38.
REGION TYPE
EU
39.
NO SIGNAL INFO
Off
40.
AUTO SEARCH TIMER
5
41.
PS8401 MODE
Jitter clean
3. Select desired destination number with [] buttons and press the [ENTER] button to set.
The present destination code will be changed. At this moment, all the user setting value will be reset to the factory
initial data according to the destination set.
4. Please to power cord removal and insertion.
5. The Display will turn on and then the "Display Language Selection" menu will be displayed on the screen. Select your lan-
guage with the [pq] buttons and press the [ENTER] button to set.
Distination code
JP = TH-49LFV8J
US = TH-49LFV8U
CN = TH-49LFV8C
EU = TH-49LFV8W
CN = TH-49LFV8C
EU = TH-49LFV8W
INF-11
SECTION 1 SERVICE INFORMATION
<49LFV8U/W>
4. 3. Troubleshooting flow
4. 3. 1. No power
11
5. Troubleshooting Guide
5.1 No Power
No power (LED “Off”)
Check the AC input and
the power is “ON”?
the power is “ON”?
Power “On”
Power board CN903 Pin
25/26/27 output=5V?
Replace the P (Power) board
Yes
No
Yes
No
Use RC or Key to turn on
the Display
No
Yes
1. RC can turn on the Display and Key
can’t, replace the Key board.
2. Key can turn on the Display and RC
can’t, replace the RC.
Replace the A (Main) board
INF-12
SECTION 1 SERVICE INFORMATION
<49LFV8U/W>
4. 3. 2. No display
13
5.3 No Display
Check the P/S and
ON/OFF
signal is available?
Replace A (main) board
Replace the power board
Panel Vcc Pin
19/20/21/22/24= 12V?
Replace the LCD Panel
No display
(LED No power)
Replace the A (main) board
Check the backlight is
“On”?
Check the LVDS cable
Reinsert or replace the
LVDS cable
Replace the A (main) board
Replace the LCD Panel
No
Yes
Yes
No
Yes
No
No
Yes
Yes
No
Yes
No
Power board
CN902 Pin 1/2/3/4/5=24V
CN904 Pin 1/2/3/4/5=24V
Che ck Display is under control and power
on/off by remote control and
power key?
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