Read Panasonic TX-28MK1LM Service Manual online
ADJUSTMENT PROCEDURE
Item / Preparation
Adjustments
+B SET-UP
1. Receive
a
Greyscale
signal.
2. Set the controls :-
Brightness
Minimum
Contrast
Minimum
Volume
Minimum
1. Set the +B voltage up as follows:-
Adjust R811 so that B2 shows 148V±1V
2. Confirm the following voltages.
B9
5
±
0,25V
B10
5
±
0,25V
B5
12
±
0,5V
B11
33
±
1,5V
B4
16
±
1V
B7
8
±
0,5V
B12
26
±
1V
B8
5,5
±
0,5V
B3
35
±
1V
B13
15
±
1V
B1
200
±
10V
B14
-15
±
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. Press "STR" and 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. Press "STR" and 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 get into the Self-Check mode
press the down (-/v) button on the customer controls at the front of the set,at the same time pressing the STATUS
button on the remote control, and the screen will show :-
press the down (-/v) button on the customer controls at the front of the set,at the same time pressing the STATUS
button on the remote control, and the screen will show :-
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
1. Service Manuals
2. Instruction Books
3. Technical Information
Part No. TZS7EZ006, TZS7EZ005 & TZS8EZ001
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.
VDP
O.K.
TUN
O.K.
E2
O.K.
MSP
O.K.
DPL
- -
PCB
O.K.
Cab
O.K.
Sum
Factory use only
OPTION 1
30
OPTION 2
0C
OPTION 3
0A
OPTION 4
00
OPTION 5
A1
OPTION 6
31
4
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