Philips 20MC4304, Service Manual

Page: 94 / 316

1-5-1 T1006PFS
PREPARATION FOR SERVICING
How to Enter the 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 Q202 (START SENSOR) and Q201 (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 power on.
2. Use service remote control unit and press "DISC
MENU" key. (See page 1-9-1.)
3. When entering the service mode, one of the num-
ber (1, 2 or 4) will display at corners of the screen.
4. During the service mode, electrical adjustment
mode can be selected by remote control key. (Ser-
vice remote control unit).
Details are as follows.
Caution: 2
1. The deck mechanism assembly is mounted on the
Main CBA directly, and SW211 (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 oper-
ated 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 the Service mode,
press the "Rec" button while depressing SW211
(REC-SAFETY SW) on the Main CBA.
Key Adjustment Mode
PICTURE
Picture adjustment mode: Press the
"PICTURE" button to change from BRT
(Bright), *CNT (Contrast), *COL (Color),
*TNT(Tint) and *V-TNT(V-Tint). Press
"CH
o
/
p
" key to display Initial Value.
*Marked items are not necessary to
adjust normally.
0
C-Trap and Y DL Time TV/Y DL Time
EXT/Y SW LPF/Black Stretch Off/ Black
Stretch CONT/C. Angle adjustment
mode: See adjustment instructions
page 1-9-2 and 1-9-3.
1 No need to use.
2
H fo adjustment mode: See adjustment
instructions page 1-9-5.
3 No need to use.
4
Auto record mode: Perform recording
(15 Sec.)-->Stop-->Rewind (Zero
return) automatically.
5
Head switching position adjustment
mode: See adjustment instructions
page 1-9-8.
6 No need to use.
7
Purity check mode: Shows Red, Green,
Blue or White cyclically on the screen
each time the "7" key is pressed.
8
H. Position Adjustment: See adjustment
instructions page 1-9-7.
9
V.size/V. shift adjustment: See
adjustment instructions page 1-9-7.
VOL
o
CD-VOL/DVD-BRT/DVD-SHARP
Adjustment mode: See adjustment
instructions page 1-9-4.
VOL
p
Cut-off Adjustment mode: See
adjustment instructions page 1-9-5.
White balance Adjustment mode: See
adjustment instructions page 1-9-6.
Key Adjustment Mode
MAIN CBA
Q201
(END SENSOR)
SW211
(REC-SAFETY SW)
Q202
(START SENSOR)