Adjustment Procedure - Panasonic TX-29A3E Service Manual

Adjustment Procedure
ettings/Specia
features
Measure Cathode D651
: so a Voltmeter shows
past Pees +150V-£0.5(TX-29A3E
+147V+0.5V).
a aC
: Place oscilloscope
Pilot fitter
ai a 54.7KHZ|
probe on pin 19 of | Adjust P1321
Max. amplitude
ones 1C1301 (ACP2371)
IC1601 (SAD2140). + 0.05V
Slowly turn P4703 anti—
clockwise, set P4703
where the RF AGC volt-
age drops by 0.2V from
the maximum.
230 V AC 50Hz — beam
Operating voltage Enicere
Test pattern
Receive a_ standard
Colour Bar Signal, 60dB
(75Q) 42dB.
Placeanoscilloscopeon
tuner AGC pin Adjust P4703 clockwise
press the Reset button onthe remote control, this will place
the TV into the Service Mode.
2. Press the RED / GREEN buttons to step up / down through
the functions.
TV to Memory Pack process Memory Pack to TV Process
1.
Plug the memory pack into the lower of the two 21 pin ale
Piug the memory pack into the lower of the two 21 pin
terminals at the back of the TV and switch the TV on. If the
terminals at the back of the TV and switch the TV on. If the
TV has only one 21 pin connector then this will be able to
TV has only one 21 pin connector then this will be able to
accept the memory pack. accept the memory pack.
2.
Go into the Service Mode as explained above. The screen 2.
Go into the Service Mode as explained above. The screen
will show: — will show: —
Program Program
External> >TV External>>TV
3.
Press the blue button ontheremote control. Thescreen will
3. Press the STORE
button on the TV. The screen will
show: — show: —
Program
:
4.
Press the STORE
button on the TV. The screen will
4.
All the tuning information stored inside the Memory Pack
show: —
will now be transferred to the TV. This process will take 2—3
minutes to complete and when finished the screen will
Storing show:—
5.
All the tuning information stored inside the TV will now be
OK!
transferred to the Memory Pack. This process willtake 2—3
minutes to complete and when finished the screen will
5.
The tuning information from the Memory Pack has now
show: — been copied into the TV
OK!
6.
To exit from the Service Mode switch off the TV.
7. The process has now been completed and the Memory
Pack can now be removed.
Errors
if an error occurs while using the Memory Pack the TV will detect this and the screen will show: —
Program
Error!