Service Menu; Service Menus - Zenith CM-150 Series Service Manual

GM CHASSIS A-LINE LINE SERVICE SETUP -
DIRECTVIEW AND PROJO
Accessing The Service Menu
You may access the menu by using the keyboard or a
remote control. If you use the keyboard press and hold
the MENU key until the customer menu disappears and
then quickly press the ADJUST RIGHT and CHANNEL
UP keys at the same time. If you use the remote control
press and hold the MENU key until the customer menu
disappears and then quickly press the number keys 9,
8, 7, 6, and ENTER. Following either procedure should
bring you to the Service Menu. The menu will display
one control at a time. Please note that FACTORY MODE
should always be OFF in the field. If FACTORY MODE is
turned ON there will be situations that cause customer
menu settings to randomly change just by turning the
set off and then on again. FACTORY MODE can be turned
OFF simply by setting the clock feature in the customer
menu.
Please note color tracking is done by the Video
Processing circuit. There are no manual color controls.
Even if COLOR LEVEL, on the customer menu, is turned
all the way down there will always be some color on
(unless the video signal is black and white with no
color burst).
A-18728-04
09 Horz Pos 12
02/05/97
MENU TERMS GLOSSARY
The items listed below are Service Menu items you may
have to adjust for a particular television. Please note
that some of these, if set wrong, may cause symptoms
similar to a circuit failure.
AC Pwr ON - Turns set on when AC line power is
applied. Power key is disabled. Automatically enabled
if factory mode is on.
CM150/PV150

SERVICE MENU

1.30
TE = 10110000
2-1
Audio Coefficients (VCO addition, SAP VCO, SAP LPF,
LPF addition, Spectral, and W ideband) - Settings for
the audio processor's stereo decode system. Values, for
Service Menu features 74 through 80, are found on a bar
code label on top of the Tuner/IF/Audio module.
A/V Lock - Disables all audio and video inputs - gives
blue screen and menus only.
Band/AFC - Allows setting of tuning band and AFC
mode. Allows manual override of the BAND and AFC
selection of Auto Program.
Note: If Auto Program is run, it will automatically
reset the manual BAND/AFC selection.
Bright AUX and Bright RF - Allows balance of AUX and
RF viewed video brightness levels.
Chan Lock - Locks set to one channel use only.
Feat. Level - 0 =11 jack, 1 = 18 jack, 2 = 21 jack. Factory
mode must be on to switch the setting. After making the
change be sure to turn off the factory mode feature.
Horz Pos and Vert Pos - Sets horizontal and vertical
position of on screen displays. Does not affect position
of the picture video.
Key Deft - Disables menu use of the keyboard keys:
MENU, ENTER, ADJUST, and SELECT.
Max Vol - Sets maximum volume limit.
Min Vol - Sets minimum volume limit.
Preset PX (also Theater, Game, Sports, Daylight, and
W eak) - Stores special customer video menu setup as six
different presets. To change, enter the customer video
menu and select video pref. feature. Select preset (i.e.
Preset, Theater, Game, etc.) that is to be changed and
customize it. Enter the Service Menus and access the
feature that was just changed (Preset PX, Theater PX,
Game PX etc.) and press adjust to store the change. The
new setup is stored as the new "video controls preset"
for that item.
Proj Mode - When enabled, adds the Projo Setup feature
to the customer setup menu. Enables customer static
setup (red and blue centering offset) display for the
projo TVs.
RGB Brite and RGB Cont - Controls on screen display
video.
Sub Contr - Sets operating range and offset of contrast.
GM CHASSIS