JVC TV-20F242 Service Manual page 31

SYSCON PCB OEC7043C (IC1001)
PIN NO. PIN NAME
53 OSD VCC
54 HLF
55 VHOLD
56 CVIN
57 NUA
58 H SYNC
59 V SYNC
60 OSD OUT 1
61 REC-H/EE-M/PB-L
62 B
63 G
64 R
65 CAPSTAN FULL
66 V REC START H
67 YC DOC/XO CTL
68 CENTER LED
69 TRICK PB/EE-H
70 TRICK PB-H
71 CLK 1
72 DATA 1
73 FF/REW-L
74 JUST CLOCK
75 AGC
76 CAPSTAN PWM
77 DRUM PWM
78 PLAY LED
79 REEL S
80 REEL T
81 VCR MUTE
82 TV MUTE
83 SP-L/LP-M/EP-H
84 CA/MA SEL
85 POWER FAIL
86 CPFGAMP OUT
87 CAPSTAN FG
88 AMP VSS
89 DRUM FG
90 DRUM PG
91 AMP VREFOUT
92 AMP VREFIN
93 C
94 CTL-
95 CTL+
96 AMP C
97 CTL AMP OUT
98 AMPVCC
99 ANALOG VCC
100 DEW(mono)
100 STEREO SEL(HiFi)
• The assignment for Pin 100 is varies according to the SET which is MONO or Hi-Fi.
It is used for DEW terminal in MONO and STEREO SEL terminal in Hi-Fi.
I/O
- 5V
- Filter connection for HLF.
- Condenser connection for VHOLD.
I Composite Video input terminal.
- Ground.
I Input terminal for H-SYNC.
I Input terminal for V-SYNC.
O Blanking output terminal of OSD.
O Output terminal for Y/C IC control.
O Color signal blue output.
O Color signal green output.
O Color signal red output.
O Output the HIGH during the acceleration force of capstan motor at SLOW mode.
O On control of A/V recording (Whole width erase) circuit.
O DOC/XO switching terminal of Y/C.
O CENTER indication LED output.
O Special effect playback.(CUE/REVIEW/STILL/SLOW etc)
O
O CLOCK terminal for I2C BUS communication.
I/O DATA terminal for I2C BUS communication.
O The output terminal of to that switches the frequency characteristic of CTL by the circuit bill
outside.
I Input terminal for JUST CLOCK.
O Not used.
O PWM output of Capstan control.
O PWM output of Cylinder control.
O PLAY indication LED output.
I Input terminal of reel sensor supply.
I Input terminal of reel sensor take up.
O Mute signal of audio mute. (VCR)
O Mute signal of audio mute. (TV)
O Output terminal for tape speed control at playback and recording.
O Not used.
I Input for the detection of power interruption.
O Output terminal for CAPSTAN FG signal detection.
I Input terminal for CAPSTAN FG signal detection.
- Ground.
I Input terminal for DRUM FG signal detection.
I Input terminal for DRUM PG signal detection.
O Condenser connection for AMP-VREFOUT.
I Condenser connection for AMP-VREFIN.
I Condenser connection for C.
I/O Input and output terminal of Control Head.
I/O Input terminal of Control Head.
- Condenser connection for AMP C.
O Output terminal for amp out.
- 5V
- 5V
I Input terminal for the detection with the dew of the cylinder.
I Input terminal for the judgement of voice reception condition.
DESCRIPTION
31