Panasonic NV-FJ623EC, Service Manual

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No. Port Name I/O Description P-OFF P-Save P-FAIL Reset
1 CURRENT_LIMIT O Capstan motor current limit terminal. Low Low Low Low
2 F ADJUST O Analogue voltage output for HEAD frequency response adjustment Low Low Low Low
3 N.C. -- Low fix (No Connection.) Low Low Low Low
4 C EMPHA(H) O
Terminal of the Current emphasis video/FM audio recording current.
[HIFI/2HEAD ]:Fix to Low (Normal mode)
[4HEAD]
:Fix to Low (factory mode)
Fix to High (Insert/AV Insert mode)
Others (Depend on tape speed)
Low Low Low Low
5 TRACKING_ENVE O Playback envelope input for auto tracking adjustment and cvc. In In In In
6 SLP(H) O
Tape running speed output terminal.(Output signal depens on tape speed)
[High]………During NTSC_10H or PAL_9H mode
[Low ]………Except NTSC_10H or PAL_9H mode Low Low Low Low
7 LP(H) O
Tape running speed output terminal.(Output signal depens on tape speed)
[High]………During NTSC_4H/6H or PAL_6H/9H mode
[Low ]………Except NTSC_4H/6H or PAL_6H/9H mode
2HEAD model: Low Fix
Low Low Low Low
8 CPB I
Input terminal for "PB (H)" from AV2.
[High]………3.85V - 5.0V
[Midd]………1.82V - 2.84V
[Low ]……… 0V - 0.81V
In In In In
9 AFC S I "S-curve" Input terminal from tuner. In In In In
10 A-MUTE(H) O Audio mute output terminal for RF Converter. High High Low High
11 AV1_8IN I
Input terminal for "PB (H)" from AV1.
[High]………3.85V - 5.0V
[Midd]………1.82V - 2.84V
[Low ]……… 0V - 0.81V
In In In In
12 N/S/T2/T3 I
Mode select terminal
[NORMAL mode ]: More than 4.0V
[SERVICE mode]: 2.5V - 4.0V
[TEST_2 mode ]: 1.0V - 2.5V
[TEST_3 mode ]: 0V - 1.0V
In In In In
13 S-PHOTO I
Tape end sensor input terminal.(Photo sensor input from supply side)
[Black Tape]: more than 2.6V
[Lead Tape]: Less than 2.4V In In In In
14 T-PHOTO I
Tape beginning sensor input terminal.(Photo sensor input from take-up side)
[Black Tape]: more than 2.6V
[Lead Tape]: Less than 2.4V In In In In
15 ABS_NORM(H) I (Input terminal for FM audio enverope output level detection) In In In In
16 N.C -- Low fix (No Connection.) Low Low Low Low
17 PLAY_REC(L) O
Output terminal for switching the capstan voltage.
[Other than PLAY/REC mode]……………Always "High".
[JOG/Shuttle mode in PLAY mode ]……Always "High".
After 5 seconds from PLAY/REC mode completion, it changes to "Low".
During "Low" outputs, it checks every main capstan FG, when the no FG is
inputted in a rotation, it changes to "High" and it keeps "high" by cassette ejection.
Low Low Low Low
18 VSYNC(L) O
Output terminal for V_sync detection result.
[Vsync exist] : "Low"
[Vsync not exist: "High" Low Low Low Low
19 D.FM.REC(H) O Timing output terminal for FM_Audio recording current. Low Low Low Low
20 ART.V/H/N O Output terminal for Artificial V synchronization signal. Low Low Low Low