No Terminal Name I/O
Description
P.OFF
P.Failure
Reset/
Release
1 NC
I
Hi-Z fix.
In
In
In
2 CODE1
I
AD input terminal for model setting.
In
In
In
3 CODE2
I
AD input terminal for model setting.
In
In
In
4 T.S.CUREVE
I
Input terminal for "S-Curve" of Tuner AFC at channel selecting.
In
In
In
5 CYLREG_SHORT
I
REG 12V short detection signal.
It is a measure for cylinder driver over heat by short.
Perform detection process at 3 seconds after that the P.ON (H) signal at Pin 83 of
IC6001 has been shifted from Low to High.
[Detection method]
When the terminal voltage is less than 3.0V during 3 seconds continuously, the
power is turned off compulsorily.
* When a cassette is in, the power is turned off after a few second delay for the
mechanism initial function.
* Key/Remote controller input is inhibited while the compulsory power off process.
In
In
In
6 NORM/SERV/T2/TEST I
Factory mode/ Service mode setting terminal.
In
In
In
7 S-PHOT
I
Input terminal of the Tape End sensor detection.
*More than 2.6V : Black tape part. *Less than 2.4V :Trans. Tape part.
In
In
In
8 T-PHOT
I
Input terminal of the Tape Beginning sensor detection.
*More than 2.6V : Black tape part. *Less than 2.4V :Trans. Tape part.
In
In
In
9 TRACKING_ENVE
I
Input terminal of the Video envelope signal.
In
In
In
10 NC
O Low fix.
Low
Low
Low
11 CURRENT.LIMIT
O
Control terminal for the Capstan current limit.
(Output impedance: MIN:1K, TYP:2.5K, MAX:4.0K)
In
DA=0V
Low
In
DA=0V
12 EEPROM_CS
O
Chip Select terminal for NAVI Data backup EEPROM.
*Active Low output.
High
Low
Low
13 ART.V/H/N
O
Output terminal for the Artificial V-sync.
1. In trick playback.
Artificial V sync inserting timing : High
Artificial H sync inserting timing : Hi-Z (M output)
Except above conditions : Low
2. NAVI REC : Hi-Z
3. OSD REC : Hi-Z
4. Other than above conditions : Low
Low
Low
Low
14 REMOCON
I
Input terminal for the Remote Controller.
In
In
In
15 PICT1
O Control terminal for the Picture mode.
Low
Low
Low
16 NC
O Low fix.
Low
Low
Low
17 PICT2
O Control terminal for the Picture mode.
Low
Low
Low
18 VIDEO.H.SW
O
Video head switching signal
*L'/R="High" *R'/L="Low"
Low
Low
Low
19 AUDIO.H.SW
O Head switching signal for Audio circuit.
Low
Low
Low
20 D.FM.REC
O
Recording control signal for Hi-Fi Audio signal.
*REC, INSERT, AV INSERT:"High" is output. (Rec on)
*Other than above condition: "Low" is output. (Rec off)
*From L to H: Switching timing of this signal is synchronized with the HSW edge just
after switching timing of "D33 of IC3001 = 0 to 1". (The delay is within 1 edge)
*From H to L: When Editing, this switching timing is before the switching timing of
"D33 of IC3001 = from 1 to 0" by 60 +- 10msec in SP mode, by 100 +- 10msec in
LP/EP mode. When normal rec mode, this switching timing is before the switching
timing of "D33 of IC3001 = from 1 to 0" by 0 ~ 150msec.
Low
Low
Low
21 R_COLE_W (L)
O
Write protection releasing terminal for RAM correction EEPROM.
*During ROM correction data being Written: "Low" is output.
*Other than above condition: Hi-Z.
Hi-Z
Hi-Z
Hi-Z
Input Voltage
Mode
Over 4.0V
Normal
Over 2.0V and less than 4.0V Service
Over 1.0V and less than 2.5V Test 2
Less than 1.0V
Test 1
Содержание NV-MV20EE
Страница 19: ...3 1 2 DETAIL OF DISASSEMBLY METHOD 1 REMOVAL OF THE TOP PANEL Remove 2 Screws A Remove 2 Screws B Fig D2 ...
Страница 27: ...10 2 CASING PARTS SECTION ...
Страница 28: ...10 3 PACKING PARTS SECTION ...
Страница 29: ...11 REPLACEMENT PARTS LIST 11 1 CHASSIS PARTS SECTION PARTS LIST ...
