Serviceman Mode (Electronic Controls)
This Receiver has electronic technology using 6.the ?CHKI2?C = Normal operation of CHANNEL
Bus Concept. It performs as a control function and iandt VOLUME .
replaces many mechanical controls. Instead of
adjusting mechanical controls individually, many of the
control functions are now performed by using ?OnAn address Menu
ba
Screen Display Menu?. (SeTrviche eman Adjustmentappears in the right
hand corner of the
Mode .)32 B 0
screen
Note: It is suggested that the technician reads all the
way through and understand the folloFigurwinge 17 . Serviceman Mode Menu Adjustments.
procedure for Entering/ExitiServng ictheema n
Adjustment Mode; then proceed with the
instructions working with the ReceiverExiting the S. Whenerviceman Mode:
becoming familiar with the procedure, Pthe ress FloAcwtion and Power on the Receiver
Chart for Serviceman Mode may be used assimu ltaaneously for at least 2 seconds.
quick guide.
THE RECEIVER EXITS SERVICEMAN MODE.
The Receiver momentarily shuts off; then comes back
on tuned to channel 3 with a preset level of sound.
Quick Entry to Serviceman Mode:
Any programmed channels, channels caption data and
When minor adjustments need to be done to the
some others user defined settings will be erased.
electronic controls, the method of Entering the
serviceman Mode without removal of the cabinet back
IMPORTANT NOTE:
is as follows using the Remote Control:
1. Select SET-UP icon and select CABLE mode. Always Exit the Serviceman Mode
2. Select TIMER icon and set SLEEP time for 3 0 M Foin.llowing Adjustments.
3. Press ?ACTION? twice to exit menus.
4. Tune to the Channel 124.
5. Adjust VOLUME to minimum (0).To Check Purity:
6. Press VOL (decre on Recease)iver. RedPress Recall on thRee mote Contro wheln in
?CHK? appears in upper corner.Serviceman Mode (red ?CHK? is displayed) to enter the
Purity Field Check Mode.
Note: After Receiver is set into SERVICEMAN mode,
NORMAL
set TIMER back to NO.SCREEN
Press RECALL again to select desired field.
To toggle between Aging and BLUE GRN. RED WHITE
SCREENSCREENSCREENSCREEN
Serviceman modes:
While the ?CHK? is displayed on the left top
Figure 18.Pu rity Check Field Mode.
corner of the CRT, pressing ?ACTION? and ?VOL?
UP on the TV simultaneously will toggle between
the modes. Red ?CHK? for Serviceman and
yellow ?CHK? for Aging.Helpful Hints
Entering Serviceman Mode (Back-Open
7. Press Powe onr the Remote Contro tol select
Method)
one of seven Serviceman Adjustment Modes.
?While the Receiver is ON and operating in Normal
1.B= Serviceman VCJ SUB-DATA ADJUSTMENTS.
Mode, momentarily short teFAst1 poi (TP8) tont
2.C= Serviceman VCJ CUT-OFF ADJUSTMENTS.
Cold Ground ( FA)2 (TP3) A-Board.
3.D= Serviceman GEOMETRIC ADJUSTMENTS.
T he Re ceiver enters the Aging . Mode
4.S = Serviceman S OPTION ADJUSTMENTS. Yellow letters ?CHK? appear in the upper left corner of
the CRT.
5.X = Serviceman GEOMAGNETIC
(The Volume Up/Down will adjust rapidly).
ADJUSTMENTS.
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ACEC
