Sharp DV-NC55S Service Manual page 75

12-13. IC8201 IX1757GE INTERFACE MICOM.
• Terminal description
Pin No. Terminal Name
1 TRAY ACK(L)
2 DVD LED(L)
3 DUB LED(L)
4 STANDBY LED(L)
5 TEST
6 XIN
7 VSS
8 XOUT
9 VDD
10 R/C
11 RESET
12 NC
13 POWER KEY
14 OPEN/CLOSE KEY
15 EA
16 POWER OFF
17 POWER ON
18 TIMER MODE
19 POWER MODE
20 REC MODE
21~31 NC
32 P-CON(L)
33 SHORT DET(L)
34 NC
35 A_OUT_MUTE(L)
36 DVD(H)
37 DUB(H)
38~40 NC
41 PLAY MODE(L)
42 STANDBY REQUEST(L)
43 TRAY REQUEST(L)
44 STANDBY ACK(L)
In/Output
Input Input terminal of [TRAY ACK] from DVD microcomputer
Output DVD LED control terminal
It outputs [L] and is lit during DVD output.
←
Output VTR DVD LED control terminal
It outputs [L] and is lit in VTR
Output Stand-by LED control terminal
It outputs [L] and is lit during stand-by.
Input IC test terminal. Fixed to GND.
Input Radiator connection terminal
– Digital GND
Output Radiator connection terminal
– Power AT_5V
Input Remote control signal input
Input Microcomputer reset signal input
– Unconnected
Input POWER key input: [L] input while key is ON.
Input OPEN/CLOSE key input: [L] input while key is ON.
Input Terminal for IC only. Fixed to power supply.
Output VTR POWER OFF key control terminal
It outputs [H] when the power is OFF.
Output VTR POWER ON key control terminal
It outputs [H] when the power is ON.
Input VTR TIMER mode detection terminal
When [H] is output, the VTR power ON/OFF is not controlled.
Input VTR POWER mode detection terminal
When [TIMER MODE] = [L], DVD is turned ON when the [POWER MODE] is
activated and turned OFF when it is deactivated.
Input VTR REC mode detection terminal
←
[VTR DVD] key is disabled at [H] input.
– No used
Output DVD P-CON control terminal
Input Short circuit detection terminal for DVD P-CON power supply
After [L] is input for 0.5 seconds, P-CON is switched to OFF.
– Unconnected
Output Sound output mute control terminal for VTR/DVD common terminal
Output Output switching control terminal for VTR/DVD common terminal
Output Input switching control terminal for VTR input 1
– No used
Input DVD PLAY mode detection terminal
When [TIMER MODE] = [H] and [PLAY MODE] = [L], DVD is not turned OFF even
if the [POWER MODE] is deactivated.
Output Control terminal for POWER OFF request to DVD microcomputer
It keeps outputting the request until [STANDBY ACK] = [L] is input.
Output Control terminal for TRAY operation request to DVD microcomputer
It keeps outputting the request until [TRAY ACK] = [L] is input.
Input Input terminal for [STANDBY ACK] from DVD microcomputer
Operation function
←
DVD mode.
79
DV-NC55S/H
DV-NC60H