Pin No.
Signal Name
I/O
Describe
P-OFF P-SAVE P-FAIL
Reset
1
A.DEF(H)
O Output signal for audio defea and decoder IC reset.
Low
Low
Low
Low
2
CKILLER DET(L)
I
Detection of COLOR KILLER active.
In
In
In
In
3
AFC S
I
S curve input from tuner.
In
In
In
In
4
SLP(H)
O
Output signal depens on tape speed.
(During N10H or P9H: High)
(Except N10H and P9H: Low)
Low
Low
Low
Low
5
CPB
I
PB input from AV2.
*3.21v ~ :High
*1.23v ~ 3.21v :Middle
* ~ 1.23v : Low
In
In
In
In
6
N/S/T2
I
Normal/Service/Test2/Test3 select.
* 4.0v ~ :NORMAL mode
* 2.5v ~ 4.0v :SERVICE mode
* 1.0v ~ 2.5v :TEST2 mode
* 0v ~ 1.0v :No define (spare)
In
In
In
In
7
S-PHOTO
I
Photo sensor input from supply side.
(more than 2.6V: black / less than 2.4V: white)
In
In
In
In
8
T-PHOTO
I
Photo sensor input from take up side.
(more than 2.6V: black / less than 2.4V: white)
In
In
In
In
9
TRACKING_ENVE
I
Video envelope input for auto tracking and CVC.
In
In
In
In
10
AV1_8IN
I
PB input from IC3001.
* 3.21v ~ : High
* 1.23v ~ 3.21v: Middle
* ~ 1.23v: Low
In
In
In
In
11
CURRENT_LIMIT
O Current limit for capstan driver.
Low
Low
Low
Low
12
F ADJUST
O Analogue voltage output for HEAD frequency response adjustment.
Low
Low
Low
Low
13
ART.V/H/N
O Artificial V synchronization signal.
Low
Low
Low
Low
14
IR
I
Interrupt input from IR sensor.
In
In
In
In
15
AVPB-H(L)
O
High
High
Low
High
16
AVPB-M(H)
O
Low
Low
Low
Low
17
EEP_WR
O
Write enable for EEPROM.
*H:READ only L:Write
High
High
Low
High
18
VIDEO.H.SW
O Output signal for video HEAD switch.
Low
Low
Low
Low
19
A.H.SW
O Output signal for FM audio HEAD switch.
Low
Low
Low
Low
20
PROG ON(H)
O
I/O control to switch IIC bus for LW-programmer.
H:IIC bus is connected to AV2.
L:IIC bus is not connected to AV2.
Low
Low
Low
Low
21
B/W(H)
O Output signal for B/W mode.
Low
Low
Low
Low
22
NC
O Non connect. (Low Fix)
Low
Low
Low
Low
23
ABS_NORM(H)
I
Input signal for FM audio enverope level detection.
(Also serves that the Automatic Adjustment is completed)
In
In
In
In
24
V EE(L)
O Output signal for switch between EE and VV.
Low
Low
Low
Low
25
D.FM.REC(H)
O Control signal for FM audio recording current)
Low
Low
Low
Low
26
D.A.REC(H)
O Control signal for normal audio recording current.
Low
Low
Low
Low
27
BIAS(H)
O
Control signal for FM audio recording current.
Low
Low
Low
Low
28
FM.MUTE(H)
O Output signal for audio mute control.
High
High
Low
High
29
PAL-I/BG/DK(SYS4)
O Output terminal for broad cast system to control the video circuit.
Not fix
Low
Low
Low
30
S-VHS DET(H)
I
Detection between SVHS and VHS.
In
In
In
In
Output signal for AV2-PB "H". (2 Scart Model)
Output signal for AV1-PB "H". (1 Scart Model)
* H/M/L is output to 21pin-(8) when both terminals are set as follows.
AVPB-H(L)
AVPBM-(H)
High
L
Hi-z
Middle
H
Hi-z
Low
H
L
Setting
Pin 8
D.A.REC(H)
BIAS(H)
140ms
140ms
Содержание NV-SV120EG
Страница 22: ...9 3 FRONT C B A 9 4 MAIN C B A 9 5 S VHS PACK C B A 10 EXPLODED VIEWS 10 1 CHASSIS PARTS SECTION 22 ...
Страница 23: ...10 2 CASING PARTS SECTION 23 ...
Страница 24: ...10 3 PACKING PARTS SECTION 24 ...
Страница 39: ...39 ...
Страница 41: ...QR4005 B1GBCFLL0002 TRANSISTOR DTC124EK T146 41 ...
Страница 50: ...C3338 F1H1H103A220 CHIP CAPACITOR 50 ...
Страница 54: ...12 SCHEMATIC DIAGRAM FOR PRINTING WITH A4 SIZE 54 ...
