Installers Menu 221-1387 - Zenith B25A10Z Service Manuallines

01 PRE PX: Used to store the customer menu adjustments
in the non-volatile memory of the EAROM . Settings for
Contrasts, Brightness, Color and Tint are stored in this
manner. 0 is custom and 7 is Pre-set stored.
02 V POS: Moves On Screen Displays vertically. Range is
0-30. Generally set at
03 H POS: Moves On Screen Displays horizontally. Range
is 0-45 . Generally set at
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
Micro IC6000 .
Note: Be careful, shorting the wrong pins could damage
the module. Always remember to remove the
jumper after setting the level.
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, 3 is ICC afc, 4 is Broadcast afc, 5 CATV
fixed, 6 is HRC fixed, and 7 is ICC fixed.
06 AC ON: There are two positions, 0 is off and I is AC
On. In On position set will turn on and off when AC
power is applied and removed.
07 RFB PF: (RF Bandpass) Range is 0-1.
08 3.5T: 3.58 MHz trap. Range is 0-1
09 RF BRT: (RF Brightness) Sets adjustment range of
the customer control, for brightness in RIF mode. Range
is 0-63
10 AUX BRT: (Auxiliary Brightness) Sets adjustment range
of the customer control, for brightness in AUX mode.
Range is 0-63,
11 V SIZE: (Vertical Size) Adjust the size of the picture
vertically. Range is-0-254.
12 H SIZE: (Horizontal Size) Adjust the size of the
picture horizontally. Range is 0-254.
13 V PHASE: (Vertical Phase) Shifts picture vertically .
Range is 0-7
14 H PHASE: (Horizontal Phase) shifts picture
horizontally. Range is 0-31.
15 AUDLVL: (Audio Level) Set gain for Composite Audio
-from Video processor. Range is 0-63.
16 RIF AGC: Range is 0-63
17 H AFC: There are two settings 0 and 1 . usually 1.
18 60 HZSW: (60 Hertz compression) There are two
seftings 0 and 2. Set to 0.
CM151

INSTALLERS MENU 221-1387

2-8
19 PIFVCO: (PIF Voltage Controlled Oscillator) Range is
0-127.
Items 20 through 24 vary with CRT*
20 R CUT: Range is 0-254
21 G CUT: Range is 0-254
22 B CUT: Range is 0-254
23 G GAIN: (Green Gain) Range is 0-254
24 B GAIN: (Blue Gain) Range is 0-254
25 6 KEYS: Set to 1 for the 6 button keyboard
27 A VCO: (Audio Decoder Oscillator) Range is 0-63.
28 AFILTER: (Audio Filter) Range is 0-63.
29 ASPECTRAL: High Frequency separation . Range is
0-63.
30 WBAND: (Wide Band Low Frecuency Separation)
Range is 0-63.
31 PIP X1 POS: Range is 0-254
32 PIP Y1 POS: Range is 0-254
33 PIP X2 POS: Range is 0-254
34 PIP Y2 POS: Range is 0-254
35 PIP BRIGHTNESS: Range is 0-254
36 PIPR CONTRAST: Range is 0-127
37 PIPG CONTRAST: Range is 0-127
38 PIP B CONTRAST: Range is 0-127
39 PIP ADJUST: Range is 0-15
40 PIPY DELAY: Range is 0-15
41 PIP BGSTART: (PIP Burst Gate Start) Range is 0-31.
42 PIP ACCLEVEL: Range is 0-63.
43 PIP HX: Range is 0-63.
44 PIP VXS: Range is 0-63.
46 PIP COMP: Pip external syncronic. Range is 0-3.
Differences for 221-1387-01
39 PIPY DELAY: Range is 0-15
40 PIP BGSTART: (PIP Burst Gate Start) Range is 0-31.
41 PIP ACCLEVEL: Range is 0-63.
42 PIP HX: Range is 0-63
43 PIP VXS: Range is 0-63
44 PIP COMP: (Pip External Syncronic) Range is 0-3.
45 XTAL: (External Crystal) Range 0-1.
* Adjust only if CRT has been changed. The "CUT"
adjustments affect the Lowlights and the "GAIN"
adjustments affect the Highlights.
CA - INSTALLER MENUS