Preparation For Servicing - Sylvania 6319CCB 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 power on.
2. Use service remote control unit and press WAKE-
UP/SLEEP key. (See page1-7-1)
3. When entering the service mode, one of the number
(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.
(Service remote control unit).
Details are as follows.
Key
Picture adjustment mode : Press
the MENU button to change from
BRT (Bright), *CNT (Contrast),
*CLR (Color), *TNT(Tint) and *V-T.
MENU Press CH UP/DOWN key to
display Initial Value, Maximum and
Minimum cyclically. *Marked items
are not necessary to adjust
normally.
C-Trap adjustment mode: See
0
adjustment instructions page 1-7-2 .
1 No need to use.
AGC/H adjustment mode: See
2
adjustment instructions page 1-7-2.
Auto AFT adjustment mode: See
3
adjustment instructions page 1-7-1.
Auto record mode: Perform
recording (15 Sec.)-->Stop--
4
>Rewind (Zero return)
automatically.
Head switching point adjustment
5 mode: See adjustment instructions
page 1-7-5.

PREPARATION FOR SERVICING

Adjustment Mode
Key
6
7
8
9
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 mecha-
nism assembly is removed from the Main CBA due
to servicing, this switch can not be operated auto-
matically.
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)
1-4-1
Adjustment Mode
No need to use.
Purity check mode: Shows Red,
Green or Blue on the screen when
the CH UP/DOWN keys are
pressed.
H. Shift adjustment mode: See
adjustment instructions page 1-7-3.
V.size/V. shift adjustment: See
adjustment instructions page 1-7-3.
MAIN CBA
Q202
(START SENSOR)
T5200PFS