JVC HR-XV1EK Service Manual page 34

VCR PCB OEC7078B (IC3001)
Pin No. Pin Name
1 MSSW B
2 MSSW A
3 KEY-A
4 KEY-B
5 AFT-SC
6 EOT
7 A-ENV
8 V-ENV
N.C.
9 AGC_DET
10 BOT
11 CAP FWD
12 CAP LIMIT
13 D.V SYNC
14 REMOCON IN
15 N.C.
16 S-DET-H
17 DVD_RESET
18 V.HEAD SW
19 A.HEAD SW
20 POWER ON H
21 CENTER LED
22 A.MUTE-H
23 N.C.
24 N.C.
25 FF/REW L
26 CAP ON
27 FL_CS
28 DVD_MUTE
29 NA REC-H
30 VV-H
31 DVD_POWER_A
32 N.C.
33 N.C.
34 N.C.
35 N.C.
36 CLKSEL
37 VCC
38 X IN
39 X OUT
40 VSS
41 XC IN
42 XC OUT
43 RESET
44 SERVICE 1
45 SERVICE 2
46 SUB_CS
47 LDM_CTL
48 N.C.
49 SUB_RESET
50 LED-SEG1
IC DESCRIPTIONS
[For HR-XV1EK]
I/O
I Input terminal(B) of mecha state sensor.
I Input terminal(A) of mecha state sensor.
I Key A input.
I Key B input.
I AFT S Curve input for tuner.
I Tape end sensor input signal.
I Input terminal of audio envelope.
I Input terminal of video RF envelope.
In case of initial setting "AUTO_SETUP" is AGC_DET.
The others are N.C..
O N.C.:Output "L".
I Detection terminal AGC voltage of TUNER.
I Tape start sensor input signal.
O Capstan forward and backward command.
O Switch the maximum output current of the Capstan Motor.
O Intative V-SYNC signal output during the special playback.
I Input the infrared remote control.
O Not used.
O Output "H" when S detection by PAL SP.
O Output terminal of DVD reset.
O Output terminal of Head Switch.(video)
O Output terminal of Head Switch.(audio)
O For control the user power switch ON/OFF.
O Center LED(EOT/BOT).
O between E-E and V-V during the special playback.
O Not used.
O Not used.
O Output "L" when fast forwarding or rewinding.
O Control the Capstan Motor rotation direction.
O CS for FL driver IC control.
O MUTE terminal for DVD when power ON/OFF .
O Control the Bias OSC for audio head.
O If the EE/VV is "VV" ,output"H".
O Control terminal of DVD POWER(3.3V).
O Not used.
O Not used.
- Not used.
- Not used.
- 5V.
- 5V.
I Connect the main crystal(12 MHz).
O Connect the main crystal(12 MHz).
- Ground.
I Subclock pulse(32.768 KHz).
O Subclock pulse(32.768 KHz).
I Input terminal of reset signal.
I Setting of service mode 1.
I Setting of service mode 2.
O Submicom communication control CS.
O Control terminal of the Loading Motor.
O Not used.
O Control submicom RESET.
O Control the LED display unit(SEG1).
Description
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