Sony SLV-ED1PL, Service Manual

Page: 51 / 135

5-2
CASSETTE CASSETTE
TAPE TAPE
PB • REC •
Signal Pin No. I/O EJECTED
LOADING UNLOADING
THREAD- UNTHREAD- STOP FF REW PB
PAUSE
SLOW
×
2 CUE REVIEW REC
PAUSE
ING ING
CAM
MA-323
O Hi-Z H L H L * 7 * 7 * 7 * 7 * 7 * 7 * 7 * 7 * 7 * 7 * 7
IC161
*£
MODE 1
MA-323
I H L L * 1 * 1 H H H H H H H H L H H
IC161
*¢
MODE 2
MA-323
I H L L * 1 * 1 H H H L L L L L L L L
IC161
*∞
MODE 3
MA-323
I L L L * 1 * 1 H L L L L L L L H L L
IC161
*§
MODE 4
MA-323
I L H H
*
1
*
1 L H H L L L L L L L L
IC161
*¶
C IN REC PRF
MA-323
I H * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2
IC161
%∞
T REEL FG
MA-323
I H/L H/L H/L H/L H/L H/L
*
3
*
3
*
3 H/L
*
3
*
3
*
3
*
3
*
3 H/L
IC161
*•
S REEL FG
MA-323
I H/L H/L H/L * 3 * 3 H/L * 3 * 3 * 3 H/L * 3 * 3 * 3 * 3 * 3 H/L
IC161
*ª
T/S LED
MA-323 O
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
4
IC161
&¢
(O.D)
CAP RVS
MA-323
I L H L H/L H L H H H H H L H H
IC161
(£
T SENS
MA-323
I * 4 * 4 * 4 * 6 * 6 * 6 * 6 * 6 * 6 * 6 * 6 * 6 * 6 * 6 * 6 * 6
IC161
!™
S SENS
MA-323
I * 4 * 4 * 4 * 6 * 6 * 6 * 6 * 6 * 6 * 6 * 6 * 6 * 6 * 6 * 6 * 6
IC161
!¡
5-3. SYSTEM CONTROL – MECHANISM BLOCK INTERFACE (MA-323 BOARD IC161)
∗
1. Uncertainty.
∗
2. “L” when erasing protection tab is bent, “H” when not bent.
∗
3. Pulse of period in proportion to reel rotating speed.
∗
4. Approx. 2 msec period “H” pulse.
∗
5. Pulse at tape running.
∗
6. Normally “L”. 2 msec period “H” pulse when tape top or tape end is detected.
∗
7. When transition to UNLOADING direction: L.
When transition to LOADING direction: H.
When CAM motor is stopped: Hi-Z.