Panasonic NV-HS830B, Service Manual

Page: 80 / 183

No. NAME I/O
Description
P-OFF P-SAVE P-FAIL Reset
1 CURRENT_LIMIT O Current limit terminal for Capstan driver. Low Low Low Low
2 F ADJUST O Analogue voltage output for Head frequency response adjustment. Low Low Low Low
3 SCAS_IN(L) I Detection Terminal for VHS tape or S-VHS tape. In In In In
4 ADUB(H) O
Switching terminal of BIAS OSC noise reduction filter in ADUB
(1). The VCR mode is ADUB/ADUB-PS(Including Assemble/Synchro./AV Insert): High output
(2). Other than above: Hi-Z output
Hi-Z Hi-Z Hi-Z Hi-Z
5 TRACKING_ENVE I Video envelope input terminal for auto tracking and CVC. In In In In
6 SLP(H) O
Tape speed output terminal.(EE/VV)
*When the NTSC10/PAL9H is set up as the Servo data.: High (H) output.
*Other than above speed : Low (L) output.
Low Low Low Low
7 LP(H) O
Tape speed output terminal.(EE/VV)
*When the NTSC4H/6H or PAL6H/9H is set up as the Servo data : High (H) Output.
*Other than above speed : Low (L) output.
*As for 2 head model, the output signal is fixed to low, no matter if it has LP mode or not.
Low Low Low Low
8 CPB I
PB(H) input terminal from AV2.
*From 3.85v to 5.0v : High
*From 1.82v to 2.84v :Middle
*From 0v to 0.81v :Low
In In In In
9 AFC S I S curve input terminal from the Tuner. In In In In
10 A-MUTE(H) O Audio mute signal exclusive for the RF converter. High High Low High
11 AV1_8IN I
PB(H) input terminal from AV1.
*From 3.85v to 5.0v : High
*From 1.82v to 2.84v :Middle
*From 0v to 0.81v :Low
In In In In
12 N/S/T2/T3 I
Normal/Service/Test2/Test3 select
*Over than 4.0v :NORMAL mode
*From 2.5v to 4.0v :SERVICE mode
*From 1.0v to 2.5v :TEST2 mode
*From 0v to 1.0v :TEST3 mode
In In In In
13 S-PHOTO I
Tape end sensor input from supply side.
*More than 2.6V: Black / Less than 2.4V : white)
In In In In
14 T-PHOTO I
Tape beginning sensor input from take up side
*More than 2.6V: Black / Less than 2.4V : white)
In In In In
15 ABS_NORM(H) I Input terminal for FM audio envelope level detection. In In In In
16 S-VHS/MES/NOR I Input terminal for Playback detection result. (S-VHS/MESECAM/NORMAL) In In In In
17 S-VHS(H) O Output terminal for S-VHS mode. Low Low Low Low
18 SECAM_ID_IN(L) I Input terminal for SECAM detection result. In In In In
19 D.FM.REC(H) O Control signal for timing of FM audio recording current. Low Low Low Low
20 ART.V/H/N O Output terminal of the Artificial V synchronization signal. Low Low Low Low
21 AV1_OUT_SW(L) I
Input terminal of composite/component switching for AV1 output.
*It is automatically switched composite/component when this result is sent to TV using P50.
In In In In
22 AV3_S_IN(L) I
I
I
I
I
I
Input terminal of AV3_S-VHS input condition.
*AV3_S-VHS IN : "Low" (L).
In In In In
23 ET_REC(H) O REC Mode output terminal of the S-VHS-ET. Low Low Low Low
24 VIDEO.H.SW O Output terminal for video HEAD switching signal. Low Low Low Low
25 A.H.SW O Output terminal for FM audio HEAD switching signal. Low Low Low Low
26 A.DEF(H) O Output terminal for decoder IC Reset. Low Low Low Low
Low Low Low Low 27 TBC MODE0 O TBC MODE0 output.
28 AVPB-H(L) O High High Low High
29 AVPB-M(H) O Low Low Low Low
30 GND(D) GND --- --- --- ---
31 20MHz.IN Main oscillator input
--- STOP STOP ---
32 20MHz.OUT O Main oscillator output
--- STOP STOP ---
33 +5V(D) VDD
--- --- --- ---
34 32KHz IN Sub oscillator input
--- --- --- ---
35 32KHz OUT O Sub oscillator output
--- --- --- ---
36 VCONT Open
--- --- --- ---
Output terminal of PB (H/M) for AV2.
(If the unit has only one scart terminal, this is for AV1.)
*To be outputted signal from 21pin (8) has been changed to H/M/L signal in accordance
with the following terminal’s settings.
High
Middle
Low
AVPBH-(L) AVPBM-(H)
L
H
H
Hi-Z
Hi-Z
L
pin8
Setting