Zenith A19A02D Service Manual page 17

1305 MICRO
00 F MODE: (Factory Mode) Use Select key to select
item #00, which is the first item in the Service Menu,
the Factory mode. This item is used by the factory
when the module is being tested. In the field, this
item should always be left "off". Zero is "Off"!
When the factory mode is Off, only the first seven
items in the Service Menu can be accessed. When the
factory mode is set to 1, all menu items will be avail-
able. Also they will appear on the screen one at a
time at the top left of the screen, as shown in Figure
3.
If the factory mode is "On", a pair of dashes will ap-
pear at the top of the Customer Set Up Menu. On
other menus a number corresponding to the setting
of a high lighted item will be shown. This is a quick
way a technician can tell that the factory mode is on.
Other unusual things also happen when the factory
mode in "On", for example, the AC power on feature is
always enabled regardless of the setting of "AC On" in
the Service Menu. The set will automatically come On
when AC is applied. In addition, when the factory
mode is "On", the Service Menu can be accessed on
10 button key boards by pressing simultaneously the
RIGHT ADJ. and CHANNEL UP buttons. On 6 button
keyboards press VOLUME UP and CHANNEL DOWN but-
tons. Otherwise the hand control must be used to re-
enter the Service Menu to turn the factory mode off.
The factory mode can also be turned off by adjusting
the setting of the clock, or running the Auto Pro-
gram feature in the customer Set Up menu.
01 Pre Px: Used to store the customer menu adjust-
ments in the non-volatile memory of the EAROM. Set-
tings for Contrasts, Brightness, Color and Tint are
stored in this manner. 0 is custom and 1 is Pre-set
stored.
02 V Pos: Moves On Screen Displays vertically. Range is
0 - 24. Generally set at 10.
03 H Pos: Moves On Screen Displays horizontally. Range
is 0 - 13. Generally set at 9.
04 Level: There are three positions, 0, 1 and 2. The
three different positions are used at the factory to
program the module for the correct features. In order
to change the level, short pins 3 and 4 together on
connector 4G9 on the main module. The connector is
located on the left hand side of the module just to
the left of the Micro IC6000 on 19" and 20" sets. On
the 25" and 27" sets it is on the left edge of the
module. Use the Adjust button to change the level.
Connector 4G9 is located on the left hand side of the
module near the micro.
CM150
INSTALLERS MENU 221-01305-01
NOTE: BE CAREFUL!! IF THE WRONG PINS ARE SHORTED,
THE MODULE CAN POSSIBLY BE DAMAGED.
NOTE: BE SURE TO REMOVE THE JUMPER AFTER THE LEVEL
HAS BEEN SET.
4G9 CONNECTOR
DATA
CLOCK
CONTROL
+5 VOLTS
GROUND
Level 0 and 2 is used for Private Label sets. Level 1
and 2 are used for Zenith sets. In the private label
mode the IR code is 21 or 121.
05 Band: There are eight positions. 0 is Broadcast fixed,
1 is CATV afc, 2 is HRC afc, 3 is ICC afc, 4 is Broadcast
afc, 5 is CATV fixed, 6 is HRC fixed, and 7 is ICC fixed.
06 AC On: There are two positions, 0 is off and 1 is AC
ON. In On position set will turn on and off when AC
power is applied and removed.
07 Rf Bpf: (RF bandpass) Range is 0 - 1.
08 3.58T: 3.58 Mhz trap. Range is 0 - 1.
09 Rf Brt: (RF Brightness) Set the adjustment range of
customer control for brightness in RF mode. Range
is 0 - 63.
10 Ax Brt: (Aux Brightness) Sets adjustment range of
customer control for brightness in the AUX mode.
Range is 0 - 63.
11 MaxCon: (Max Contrast) Set adjustment range of
customer control for contrast. Range is 0 - 63.
12 V. Size: (Vertical Size) Adjusts size of picture
vertically. Range is 0 - 254.
13 H. Size: (Horizontal Size) Adjusts size of picture
horizontally. Range is 0 - 254.
14 V. Phase: (Vertical Phase) Shifts picture vertically.
Range is 0 - 7.
15 H. Phase: (Horizontal Phase) shits picture verti-
cally. Range is 0 - 7.
16 AudLvl: (Audio Level) Set gain for Composite
Audio from Video processor. Range is 0 - 63.
17 RF Agc: Range is 0 - 63.
2-5
1
2
3
TEST
4
POINT
5
GA - INSTALLER MENUS