No Terminal Name I/O
Description
P.OFF
P.Failure
Reset/
Release
22 NC
O Low fix.
Low
Low
Low
23 ABS_NORMAL
I
Enforced Normal selection signal and Audio Automatic Adjustment Trigger Input
Terminal
*To turn audio into normal: Low
(During ADUBPS, HiFi Audio envelopedeterioration
*Others: High
In
In
In
24 D.A.REC(H)
O
Recording on/off control signal terminal for Linear audio.
1.When recording linear audio, take AV1chip D33, BIAS (H) and timing as below.
*During Initial recording, at about same timing for D33=0 1, Bias=High.
*When finished recording, BIAS (H)=H L, after 140+-10msec, set to Low.
2.Other than above, Output=Low
Low
Low
Low
25 PAL 9H (H)
O PAL 9H: High is output.
Low
Low
Low
26 BIAS(H)
O
Linear Audio recording/ erasing On/ Off control terminal.
1.When recording Linear Audio, at about same timing of D33, Output=Low.
Output mode: REC, A. DUB, AV_INSERT
*When initiating recording D. A. REC (H)=L H, after 140+-10msec set to High.
*When completing recording) (Without delay) Output=Low
2.Wnen erasing TAPE REFRESH, Output=HIgh
3.Other than above, Output=Low
4.When models without DUB, can control ERASE ON/OFF.
Low
Low
Low
27 STAB(L)
I
SAFETY TAB DETECTION
*With SAFETY TAB: "Low"
*Without SAFETY TAB:"High"
In
In
In
28 FM_MUTE
O
Audio mute control terminal.
High output (AUDIO MUTE).
The voltage is shifted to Hi-Z for reucing the current at 3 second after the power has
been turned on .
Hi-Z
In
In
29 SW1
O
AUDIO SYSTEM (TUNER PRESET)=BG, I: High output
AUDIO SYSTEM (TUNER PRESET)=DK, M: Low output
Low
Low
Low
30 POS.SW4
I
In
In
In
31 POS.SW3
I
In
In
In
32 POS.SW2
I
In
In
In
33 POS.SW1
I
In
In
In
34 RESET
I
RESET Terminal.
In
In
In
35 32KHz.IN
I
Sub clock (32.768KHz) osc. input terminal.
In
In
In
36 32KHz.OUT
O Sub clock (32.768KHz) osc. output terminal
Out
Out
Out
37 5V(D)
-
VCC (5V) for Digital port
-
-
-
38 12MHz.IN
I
Main clock (12MHz) osc. input terminal.
In
In
In
39 12MHz.OUT
O Main clock (12MHz) osc. output terminal.
Out
Out
Out
40 GND(OSC)
-
Digital GND for OSC circuit.
-
-
-
41 PAL PB (L)
O
3.58NTSC (D6=0, D7=0 both of IC3001): High output
Other than above : Low output
Low
Low
Low
Input terminal for mechanism position.
SW4 SW3 SW2 SW1 Position Name
1
1
1
0
EJECT Position
0
0
1
0
DOWN Position
0
0
1
1
R-REW Position
0
1
0
0
LOAD Position
0
1
0
1
REV Position
0
1
1
0
PLAY Position
0
1
1
1
P_OFF Position
1
0
0
0
STOP_R Position
1
0
0
1
STOP_F Position
1
1
0
0
FF/REW Position
1
1
1
0
FF2 Position
1
1
1
1
Intermediate Positions
between each
Positions
Summary of Contents for NV-MV21GC
Page 21: ...2 REMOVAL OF THE BACK PANEL Remove 2 Screws C Remove Screw D Unlock 4 Tabs E Fig D3 21 ...
Page 28: ...10 2 CASING PARTS SECTION 28 ...
Page 29: ...10 3 PACKING PARTS SECTION 29 ...
Page 30: ...11 REPLACEMENT PARTS LIST 30 ...
Page 82: ...40 ...
Page 83: ...40 ...
