Pioneer CT-R5, Service Manual

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CT-R5
30
7. GENERAL INFORMATION
7.1 IC
7
PDC044A (IC401: MCON ASSY )
¶
System Micro-computer
No. Name I/O Description
1 TC/XMD O Switching Signal H :TC / L : MD
2 XT OUT O L: Loading mechanism OPEN (Nch O.D.)
3 XT IN O L: Loading mechanism CLOSE(Nch O.D.)
4 S. CLK I System bus CLOCK
5 XRESET I Reset
6 NC –– Connected to V
DD
7 NC –– Not used
8 NC –– Connected to V
DD
9 V
SS
–– Power supply (–) terminal V
SS
10 CF1 I
Connected to Ceramic oscillator
11 CF2 O ( 6 MHz)
12 V
DD
–– Power supply (+) terminal
13 KEY1 I key data input (A/D)
14 KEY2 I key data input (A/D)
15 XTEST I TEST MODE detection L: TEST IN
16 MS I Audio signal detection for MS H: MS
17 PULSE I Cassette mechanism Pulse input
18 NC –– Not used
19 XREC-F I FWD REC detection switch (L: ON ban)
20 XHALF I L: Tape detection switch ON
21 XREC-R I REV REC detection switch (L: ON ban)
22 XCr SW I L : CrO2 detection switch ON
23 XMODE I L: MODE detection switch ON
24 NC –– Not used
25 MOTOR O Cassette mechanism motor ON
26 SOL O Loading mechanism Solenoid ON
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Pin Function
No. Name I/O Description
27 LED 8 O H: FWD
28 LED 7 O H: REV
29 NC –– Not used
30 LED 6 O H: POWER ON
31 LED 5 O H: DOLBY
32 LED 4 O H: REC
33 LED 3 O H: REPEAT
34 LED 2 O H: A
→
B
35 LED 1 O H: ONEWAY
36 SO O System bus Data OUTPUT
37 SI I System bus Data INPUT
38 S.REQ I/O System bus Request
39 XOPEN I L: Tray open explicit switch ON
40 XCLOSE I L: Tray close explicit switch ON
41 BIAS O H: BIAS oscillation ON
42 NC –– Not used
43 XCrO
2
O Switching tape type H:NORMAL / L:CrO2
44 XREC MUTE O L: REC MUTE ON
45 XPB/REC O Switching L: PB / H: REC
46 XDOLON O L: DOLBY NR ON
47 XPBMUTE O L: PB MUTE ON
48 NC –– Not used
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The information shown in the list is basic information and may not
correspond exactly to that shown in the schematic diagrams.