Preparation For Servicing - Philips 21PV385 Service Manual

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 the power on. (Use main power on the TV
unit.)
2. Press [STANDBY/ON], [2], [7], [1], and [MUTE] but-
tons on the remote control unit in that order within 5
seconds. When entering the service mode, "4" will
display at corners of the screen.
3. During the service mode, electrical adjustment
mode can be selected by remote control key.
Details are as follows.
Key
Picture adjustment mode: Press the
MENU button to change from BRT
(Bright), *CNT (Contrast), *COL
MENU (Color), *TNT(Tint) and SHP(SHARP).
Press P+/P- key to adjust Initial Value.
*Marked items are not necessary to
adjust normally.
SECAM Black Level adjustment mode:
See adjustment instructions page
1-6-4.
- Cut-Off adjustment mode: See adjust-
ment instructions page 1-6-5.
White Balance adjustment mode: See
adjustment instructions page 1-6-6.
C-Trap adjustment mode: See adjust-
0
ment instructions page 1-6-3.
DSPC adjustment mode: See adjust-
1
ment instructions page 1-6-3.
H adjustment mode: See adjustment
2
instructions page 1-6-2.
Head switching point adjustment mode
3 (Auto adjustment): See adjustment
instructions page 1-6-8.
Auto record mode: Perform recording
4 (15 Sec.)-->Stop-->Rewind (Zero
return) automatically.
Head switching point adjustment mode
5 (Manual adjustment): See adjustment
instructions page 1-6-8.

PREPARATION FOR SERVICING

Adjustment Mode
Key
6 No need to use.
7 No need to use.
H. Shift adjustment mode: See adjust-
8
ment instructions page 1-6-5.
V.size/V. shift adjustment: See adjust-
9
ment instructions page 1-6-4.
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.
Q201
(END SENSOR)
SW211
(REC-SAFETY SW)
1-3-1
Adjustment Mode
Q202
(START SENSOR)
MAIN CBA
T6550PFS