Panasonic TX-28LK10P / TX-25LK10P Service Manual ▷ View online
ADJUSTMENT PROCEDURE
Item / Preparation
Adjustments
+B SET-UP
1. Receive a Greyscale signal.
2. Set the controls :
2. Set the controls :
Brightness
Minimum
Contrast
Minimum
Volume
Minimum
Confirm the following voltages.
B2
148
± 2V
B10
5,25
± 0,25V
B9
5
± 0,25V
B11
33
± 1,5V
B5
12
± 0,5V
B7
8
± 0,5V
B4
16 ± 1V
B8
6
± 1V
B12 26
± 2V
B13
13,5
± 1V
{28
± 2V}
{16,5 ± 1V}
B3
36
± 1,5V
B14
-14
± 1V
B1
205
± 10V
{-10
± 1V}
CUT OFF / Ug2 Test
1. Receive a Greyscale signal.
2. Degauss the tube externally.
3. Set the TV into Service Mode 1.
4. Select Cut off mode.
2. Degauss the tube externally.
3. Set the TV into Service Mode 1.
4. Select Cut off mode.
To adjust Cutoff connect an oscilloscope to the Blue
cathode, adjust "cutoff" value using the "Yellow" and "Blue"
buttons until the black level is 160V±5V press "STR" to store
the value. Remove the oscilloscope.
Select Ug2 adjustment and adjust the screen VR until the
display shows "O.K."
cathode, adjust "cutoff" value using the "Yellow" and "Blue"
buttons until the black level is 160V±5V press "STR" to store
the value. Remove the oscilloscope.
Select Ug2 adjustment and adjust the screen VR until the
display shows "O.K."
SELF CHECK
Self-check is used to automatically check the bus lines and hexadecimal code of the TV set.To enter Self-Check mode. press
the down (-/v) button on the customer controls at the front of the TV set, at the same time pressing the STATUS
the down (-/v) button on the customer controls at the front of the TV set, at the same time pressing the STATUS
button
on the remote control. To exit Self Check, switch off the TV set at the power button.
If the CCU ports have been checked and found to be incorrect or not located then " - - " will appear in place of "O.K.".
Service Aids
To aid in the service of our current chassis there are a number of Service Aids which have been made available.
•
•
LUCI
interface kit (Linked Utility Computer Interface)
Part number: TZS6EZ002
This contains interface and cables for connecting TV service connector and a PC as well as diagnostic software. As new
models are introduced upgrade software will become available.
This contains interface and cables for connecting TV service connector and a PC as well as diagnostic software. As new
models are introduced upgrade software will become available.
•
VICI
(Visual Interactive Computer Information)
These C.D.'s contain multimedia documentation providing quick access to service information.
Part No. TZS7EZ006, TZS7EZ005, TZS8EZ001 & TZS9EZ001
1. Service Manuals
2. Instruction Books
3. Technical Information
Part No. TZS7EZ006, TZS7EZ005, TZS8EZ001 & TZS9EZ001
1. Service Manuals
2. Instruction Books
3. Technical Information
•
TASMIN
(Technically Advanced System for Multimedia Interactive Notes)
As well as providing a first step towards more interactive training this product also achieves quick access to Technical
Information.
Information.
VPC
O.K.
CIP
O.K.
SRC
O.K.
DDP
O.K.
TUN
O.K.
E2
O.K.
MSP
O.K.
DPL
- - -
PCB
O.K.
CAB
O.K.
OPTION 1 3D
OPTION 2 1C
OPTION 3 0F
OPTION 4 00
OPTION 5 ED
OPTION 6 A1
5
WAVEFORM PATTERN TABLE
6
CONDITIONS:
CONTRAST...MAX, BRIGHTNESS...MID, COLOUR...MID, SHARPNESS...MID
ALIGNMENT SETTINGS
(The figures below are nominal and used for representative purposes only.)
1. Set the Bass to maximum position, set the Treble to minimum position, set the Volume to minimum then press the
1. Set the Bass to maximum position, set the Treble to minimum position, set the Volume to minimum then press the
down button (-/v) on the customer controls at the front of the TV and at the same time press the INDEX button on the
remote control, this will place the TV into the Service Mode.
remote control, this will place the TV into the Service Mode.
2. Press
the
RED / GREEN buttons to step up / down through the functions.
3. Press
the
YELLOW / BLUE buttons to alter the function values.
4. Press
the
STR button after each adjustment has been made to store the required values.
5. To exit the Service Mode, press the "N" button.
Alignment Function
Settings / Special features
Horizontal Position
H-Pos
061
Optimum setting.
Vertical Position
V-Pos
005
Optimum setting.
Horizontal Amplitude
H-Amp
055
Optimum setting.
Vert. Amplitude
V-Amp
054
Optimum setting.
EW-amplitude
EW-Amp 1
- 030
Optimum setting.
Lower corner
Lower corner
007
Optimum setting.
Trapezium-comp
Trapez 1
047
Optimum setting.
Upper corner
Upper corner
006
Optimum setting.
Vertical Linearity
V-Lin
006
Optimum setting.
Vertical Symmetry
V-Sym
002
Optimum setting.
Angle
Angle
000
Optimum setting.
Bow
Bow
005
Optimum setting.
DVCO
DVCO
- 005
Receive a PAL Colour Bar Pattern. For
DVCO alignment press "Blue" button, wait
until the colours are changing slowly and
press "STR".
DVCO alignment press "Blue" button, wait
until the colours are changing slowly and
press "STR".
Cut-off DC
Cut-off
0171
Ug2 Test
Ug2
0155
O.K.
To adjust Cutoff connect an oscilloscope to
the blue cathode, adjust "cutoff" value
using the "Yellow" and "Blue" buttons until
the black level is 160V±5V press "STR" to
store the value. Remove the oscilloscope.
Select Ug2 adjustment and adjust the
screen VR until the display shows "O.K."
the blue cathode, adjust "cutoff" value
using the "Yellow" and "Blue" buttons until
the black level is 160V±5V press "STR" to
store the value. Remove the oscilloscope.
Select Ug2 adjustment and adjust the
screen VR until the display shows "O.K."
Highlight
Lowlight
High 0396 0357 0374
Low
Low
0117 0132 0112
Optimum setting.
Sub-Brightness
Sub-Brightness
000
Optimum setting.
7
Black Level
160V±5V
GND
VIDEO BLOCK DIAGRAM
8
C OUT 10-16
27
33
34
35
28
29
26
30
25
3
2
1
6
7
8
F1
F - BOARD
Q105
AV1
Video Out 19
Video In 20
AV2
E8
5
4
3
Q351
Q371
Q361
CRT
Y2
5
4
3
TUNER
Q104
Red 15
Blue 7
Green 11
Video In 20
AV2 C 15
Video Out 19
Y - BOARD
E - BOARD
3
9
IC351
R OUT
Q1508
Q1509
Q1510
Q1505
Q1506
Q1507
Q1511
Q1512
Q1513
3
9
IC371
B OUT
3
9
IC361
G OUT
Q1501
62 VIN1
IC1501
IC1502
67 RV
65 GY
63 BU
IC1101
R 37
CVBS 68
G 38
B 39
MICRO
PROCESSOR
IC601
AV VIDEO
SWITCH
6
3
COMPONENT
INTERFACE
PROCESSOR
VIDEO PROCESSOR
8
E26
1
E25
1
AV3
61 VIN2
60 VIN3
63 CIN
58 VIN4
64 VOUT
C1 38-43, 46, 47
Y 20- 25, 28, 29
Y IN 44-51
C IN 36-43
8 bit
8 bit
Y OUT 20-27
C OUT 10-17
IC1503
C IN 37-44
Y IN 43-50
8 bit
8 bit
8 bit
Y OUT 3-7, 1, 63, 64
25
26
24
33
31
32
IC1504
DEFLECTION
PROCESSOR
PROCESSOR
Y IN 54-61
8 bit
8 bit
UP-CONVERTER
C IN 43-50
27
33
34
35
28
29
26
30
25
3
2
1
6
7
8
E70
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