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Pin No. In/Out Port Name Function
1 O AUDIO DEF(H) This port is low while Decoder IC is reset.
2 O FORCE MONO(H) This port is high while audio mode is set complsory monoraul mode.
3 I AFC(S) Tuner S curve input.
4 O Not used
5 I L6/U6/U4/U2/U2L Cylinder unit (HI-FI/Normal) selection.
Input voltage Cylinder Type HI-FI/NORMAL
More than 4.2V LDD 6CH HI-FI
3.0V - 4.2V UDD 6CH HI-FI
UDD 2CH
2.0V - 3.0V NORMAL
(No LP mode)
UDD 2CH
0.8V - 2.0V NORMAL
(LP mode)
Less than 0.8V UDD 4CH NORMAL
6 I NORM/SER/T1/T2 Normal/Service/Test1/Test2 mode selection.
Input voltage Mode
More than 4.0V Normal
2.5V - 4.0V Service
1.0V - 2.5V Test2
Less than 1.0V Test1
7 I S-PHOT This port receives 2.4V or less when Supply photo sensor detects the tape end.
8 I T-PHOT This port receives 2.4V or less when Take-up photo sensor detects the tape beginning.
9 I TRACKING ENVE Playback envelope input for auto tracking adjustment and CVC.
10 O Not used
11 O CURRENT LIMIT Capstan motor current limitter output.
12 O REC CUR AI recording current control and Playback AI picture VR control.
13 O ART.V/H/N This port supplies artificial vertical sync signal to stabilize the picture in special playback
mode.
14 I REMOCON Remote control signal input and Digital Link input.
15 O ROTARY.SW Rotary switching signal output.
16 O H.A.SW Head amp switching signal output.
17 I ENVE.SLECT This port receives the playback envelope signal level to select the video head in special
playback mode.
18 O VIDEO.H.SW Video head switching signal output.
19 O AUDIO.H.SW Audio head switching signal output.
20 O REC(H) Video/audio signal recording/playback control.
21 O D.REC(H) Video signal recording on/off control.
22 O C.EMPHA(H) This port supplies high during a certain time from starting the recording to control the
HI-FI audio recording current.
23 O D.FM.REC(H) HI-FI audio recording on/off control.
24 O VIDEO.EE(L) This port is low during EE mode.
25 O TRICK(L) This port is low during special playback (CUE,REV,SLOW,STILL) mode.