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Serviceman Mode (Electronic Controls)
This Receiver has electronic technology using the 1 2 C Bus Concept. It performs as a control function and it
replaces many mechanical controls. Instead of adjusting mechanical controls individually, many of the control
functions are now performed by using "On Screen Display Menu". (The Serviceman Adjustment Mode.)
Note: It is suggested that the technician reads all the way through and understand the following procedure for
Entering/Exiting the Serviceman Adjustment Mode; then proceed with the instructions working with the
Receiver. When becoming familiar with the procedure, the Flow Chart for Serviceman Mode may be used
as a quick guide.
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Quick Entry to Serviceman Mode:
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At times when minor adjustments need to be done to the electronic controls, the method of Entering the
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serviceman Mode without removal of the cabinet back is as follows using the Remote Control:
1.
Select SET-UP icon and select CABLE mode.
2. Select TIMER icon and set SLEEP time for 30 Min.
3. Press ACTION button twice to exit menus.
4. Tune to the Channel 124.
5. Adjust VOLUME to minimum (0).
6. Press the VOL
4
button (decrease) on Receiver. Red "CHK" appears in upper corner
To toggle between Aging and Serviceman modes:
While the "CHK is displayed on the left top corner of the CRT, pressing the Action and the Volume Up
buttons on the Receiver simultaneously will toggle between the modes. Red
"CHK"
for Serviceman and yellow
"CHK" for Aging.
7. Press the Power Button on the Remote Control to select one of six Serviceman Adjustment Modes.
1) B= Serviceman VCJ SUB-DATA ADJUSTEMENT.
2)
C= Serviceman VCJ CUT-OFF ADJUSTMENT.
3)
S= Serviceman OPTIONS (PIP and CLOCK) ADJUSTMENT.
4)
M= Serviceman MTS ADJUSTMENTS.
5)
V = Serviceman OPTIONAL ADJUSTMENT.
6)
"CHK = Normal operation of CHANNEL
AV
and VOLUME
4 b.
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Note: Only the applicable settings for
the Receiver serviced will be
available (See a in Figure
27).
An address Menu appears in the right
hand comer of the screen
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Figure 27. Serviceman Mode Menu Adjustments.
Exiting the Serviceman Mode:
Press the Action and the Power buttons on the Receiver simultaneously for at least 2 seconds.
THE RECEIVER EXITS SERVICEMAN MODE.
The Receiver momentarily shuts off; then comes back on tuned to channel 3 with a preset level of sound.
Any programmed channels, channels caption data and some others user defined settings will be erased.
IMPORTANT NOTE:
Always Exit the Serviceman Mode
Following Adjustments.
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