Adjustment Procedure And Self-Check - Panasonic TX-28MDT4F Service Manual

ADJUSTMENT PROCEDURE
Item / Preparation
+B SET-UP
1. Receive a Greyscale signal.
2. Set the controls :-
Brightness Minimum
Contrast Minimum
Volume Minimum
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.
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 :-
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.
•
VICI (Visual Interactive Computer Information)
These C.D.'s contain multimedia documentation providing quick access to service information.
Part No. TZS7EZ006 & TZS7EZ005
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.
VDP O.K.
TUN O.K.
E2 O.K.
MSP O.K.
DPL - -
OPTION1 3D
OPTION2 0C
OPTION3 1D
OPTION4 00
OPTION5 EF
OPTION6 23
Adjustments
1. Set the +B voltage up as follows:-
Adjust R811 so that B2 shows 148V±1V.
2. Confirm the following voltages.
B9 5 ±
B5 12 ±
B4 16 ±
B12 26 ±
B3 35 ±
B1 200 ±
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."
PCB O.K.
Cab O.K.
Sum
Factory use only
5
0,25V B10 5
0,5V B11 33 ±
1V B7 8
1V B8 5,5 ±
1V B13 15 ±
10V B14 -15 ±
± 0,25V
1,5V
± 0,5V
0,5V
1V
1V