B.l.e. Adjustment; Leader Tape Detect Adjustment - Pioneer CT-9R Service Manual

5.10 B.L.E. Adjustment
Setting:
M o d e
. . . . S T O P
T I M E R s w i t c h
. . O F F
Test tape
. STD-608A
O s c i l l o s c o p e . . . . B e t w e e n C 3 5 7 ( + ) t e r -
minal of mother assem-
bly and ground
Procedure:
1. Connect the jumper cord between TPb and
ground momentarily
and then depress the
REC button.
2. Adjust the VR307 so that the DC mV meter
reads 2V and depress the STOP button.
3. Set the CT-9R to REW mode and then REC
mode.
4. Adjust the VR308 so that the DC mV meter
reads 2V and depress the STOP and RESET
buttons.
t srrp6o8A I
F i g . 5 - 1 7 B . L . E . a d j u s t m e n t
5.1 1 Leader Tape Detect Adjustment
Step 1.
Setting:
M o d e
. . . . S T O P
InputSignal
. .. . 2kLIz, -17dBv (0.4V P-P
Sine wave) to TP6 of the
Mother assembly
DC mV meter
. . . TP7 of the Mother
assembly
Procedure:
1. Remove the connector B of the Mother assem-
blv.
2. Adjust the VR309 so that the DC mV meter
reads 10.5V10.25V.
3. Retum the connector B to the original position.
Fig. 5-18 Leader tape detect adjustment
Step 2.
Setting:
M o d e
. . . .
P l a y b a c k
T a p e .
. . . . C a s s e t t e h a l f w i t h o u t t a p e
AC mV meter
. . . TP6 of the Mother
assembly
Procedure:
1. Confirm that the AC mV meter reads - 10dBv
(0.6V P-P square wave).
2. If - 10dBv is exceeded, substitute the connector
assembly A for the connector assembly A'.
Fig. 5-19 Leader tape detect adjustmenr
|c"*tr"l
I without tape I
2kHz, -17dBv
^
S T O P m o d e
QD REW mode
R EC mode
O
depress the
STOP.
B u t t o n .
within -1odBv (0.6v1
3 7