Panasonic NV-MV21GC Service Manual page 57

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No Terminal Name I/O
PROGRESSIVE TV
1
I
(L)
2 CODE1
I AD input terminal for model setting.
3 CODE2
I AD input terminal for model setting.
4 T.S.CUREVE
I Input terminal for "S-Curve" of Tuner AFC at channel selecting.
5 NC
O Low fix.
6 NORM/SERV/T2/TEST I
7 S-PHOTO
I
8 T-PHOTO
I
9 TRACKING_ENVE
I Input terminal of the Video envelope signal.
10 NC
O Low fix.
11 CURRENT.LIMIT
O
12 EEPROM_CS
O
13 ART.V/H/N
O
14 REMOCON
I Input terminal for the Remote Controller.
15 PICT1
O Control terminal for the Picture mode.
16 NC
O Low fix.
17 PICT2
O Control terminal for the Picture mode.
18 VIDEO.H.SW
O
19 AUDIO.H.SW
O Head switching signal for Audio circuit.
20 D.FM.REC
O
21 R_COLE_W (L)
O
Port for scanning line control:
scanning line 628: H
scanning line 624: L
Factory mode/ Service mode setting terminal.
Input Voltage
Over 4.0V
Over 2.0V and less than 4.0V Service
Over 1.0V and less than 2.5V Test 2
Less than 1.0V
Input terminal of the Tape End sensor detection.
*More than 2.6V : Black tape part.
Input terminal of the Tape Beginning sensor detection.
*More than 2.6V : Black tape part.
Control terminal for the Capstan current limit.
(Output impedance: MIN:1K, TYP:2.5K, MAX:4.0K)
Chip Select terminal for NAVI Data backup EEPROM.
*Active Low output.
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
Video head switching signal
*L'/R="High"
*R'/L="Low"
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.
Write protection releasing terminal for RAM correction EEPROM.
*During ROM correction data being Written: "Low" is output.
*Other than above condition: Hi-Z.
Description
Mode
Normal
Test 1
*Less than 2.4V :Trans. Tape part.
*Less than 2.4V :Trans. Tape part.
Reset/
P.OFF
P.Failure
Release
Low
Low
In
In
In
In
In
In
Low
Low
In
In
In
In
In
In
In
In
Low
Low
In
Low
DA=0V
DA=0V
High
Low
Low
Low
In
In
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Hi-Z
Hi-Z
Low
In
In
In
Low
In
In
In
In
Low
In
Low
Low
In
Low
Low
Low
Low
Low
Low
Hi-Z

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