Preparation For Servicing - Magnavox CT202MW8 Service Manual

How to Enter Service Mode
Caution 1:
1. Optical sensors system are used for Tape Start
and End Sensor on this equipment. Read this
page carefully and prepare as described on this
page before starting to service; otherwise, the unit
may operate unexpectedly.
Preparing 1:
1. Cover Q1202 (START SENSOR) and Q1201
(END SENSOR) with Insulation Tape or enter the
service mode to activate Sensor Inhibition
automatically.
Note: Avoid playing, rewinding or fast forwarding the
tape to its beginning or end, because both
Tape End Sensors are not active.
How to Enter the Service Mode
1. Turn the power on.
2. Use the service remote control unit and press
[DISC MENU] button.
3. When entering the service mode, one of the
number (1, 2 or 4) will be displayed at corners of
the screen.
4. During Service mode, electrical adjustment mode
can be selected by the service remote control unit
key.
Details are as follows.
Key Adjustment Mode
Picture adjustment mode in TV mode or
DTV mode:
Press the [PICTURE] button to change
from BRT (Bright), *CNT (Contrast),
PICTURE *COL (Color), *TNT(Tint), *V-T(V-Tint)
and *SHP (Sharpness). Press [CH. o/
p] buttons to display Initial Value.
*Marked items are not necessary to
adjust normally.
C-Trap adjustment mode in TV mode:
0
See adjustment instructions.
1 No need to use.
H f adjustment mode:
0
2
See adjustment instructions.
U-/V-Pedestal adjustment mode in DTV
3 mode:
See adjustment instructions.
Auto record mode:
4 Perform recording (15 Sec.) --> Stop -->
Rewind (Zero return) automatically.

PREPARATION FOR SERVICING

Key
Head switching position adjustment:
5
See adjustment instructions.
YUV Brightness up adjustment mode in
6 DTV mode:
See adjustment instructions.
Purity check mode:
Shows Red, Green, Blue or White
7
cyclically on the screen each time the
[7] button is pressed.
H. Position adjustment:
8
See adjustment instructions.
V. Position/V. Size adjustment:
9
See adjustment instructions.
VOL m No need to use.
Cut-off/Drive adjustment:
See adjustment instructions.
VOL n
White balance adjustment:
See adjustment instructions.
Caution 2:
1. The deck mechanism assembly is mounted on the
Main CBA directly, and SW1211 (REC-SAFETY
SW) is mounted on the Main CBA. When deck
mechanism assembly is removed from the Main
CBA due to servicing, this switch can not be
operated automatically.
Preparing 2:
1. To eject the tape, press the [STOP/EJECT] button
on the unit (or remote control).
2. When you want to record during Service mode,
press the [REC] button while depressing SW1211
(REC-SAFETY SW) on the Main CBA.
Q1201
(END SENSOR)
SW1211
(REC-SAFETY SW)
1-5-1
Adjustment Mode
Q1202
(START SENSOR)
MAIN CBA
P7753PFS