Ic Pin Description - Sony TC-TX313 Service Manual

6-8. IC PIN DESCRIPTION

• IC04 µPD75108GF-N14-3BE (SYSTEM CONTROL)
Pin No. Pin Name
1 RVS REC RELAY
2 FWD REC RELAY
3 RVS PLAY RELAY
4 FWD PLAY RELAY
5 POWER OUT
6 AMS OUT
7 RESET
8 XTAL
9 XTAL
10 NR OUT
11 REC/PB
12 F/R
13 BIAS
14 LINE MUTE
15 PB.MUTE
16 REC.MUTE
17 TAPE 4
18 TAPE 2
19 TAPE 1
20 M.FWD
21 M.REV
22 H.SPEED
23 L+
24 L-
25 AU BUS OUT
26 VSS
27 F.REC
28 R.REC
29 PACK IN
30 AU BUS IN
31 AMS IN
32 KEY 1
33 KEY 0
34 S.PLAY MODE
35 F.REEL
36 R.REEL
37 MODE SEL
38 CrO2
39 TAPE IN
40 TEST PIN
41 NC
42, 43 NC
44 POWER DOWN IN
45 NR.LED
46 PB.LED
47 TAPE.LED
48 CD SYC.LED
49 REC.LED
50 >>.LED
51 <<.LED
52 PAUSE.LED
I/O
O RVS REC relay control output (Not used in this set.)
O FWD REC relay control output (Not used in this set.)
O RVS PLAY relay control output (Not used in this set.)
O FWD PLAY relay control output (Not used in this set.)
O Power output (Not used in this set.)
O AMS gain control output (Not used in this set.)
I Reset input (L : Reset)
— Oscillator circuit (4.19 MHz)
— Oscillator circuit (4.19 MHz)
O Noise reduction signal output (Not used in this set.)
O REC/PB select output (H : REC, L : PB)
O RVS/FWD select output (H : RVS, L : FWD) (Not used in this set.)
O Bias oscillation control output (H : ON, L : OFF)
O Line mute control output (H : OFF, L : ON)
O PB mute control output (H : OFF, L : ON)
O REC mute control output (H : OFF, L : ON)
O REC equalizer select output (H : METAL) (Not used in this set.)
O REC equalizer select output (H : CrO
O REC equalizer select output (H : NORMAL)
O Reel motor forward direction rotation output
O Reel motor reverse direction rotation output
O Tape speed control output
O Loading motor forward direction rotation output
O Loading motor reverse direction rotation output
O AU BUS signal output
— Ground
I Mechanism deck FWD REC PROOF claw detection signal input (H : REC inhibit)
I Mechanism deck RVS REC PROOF claw detection signal input (H : REC inhibit)
I Loading detection signal input
I AU BUS signal input
I AMS signal input
I Key switch input 1
I Key switch input 0
I Mechanism deck tape position detection signal input
I Mechanism deck FWD reel sensor detection signal input
I Mechanism deck RVS reel sensor detection signal input
I Connect to Ground in this set.
I Mechanism deck CrO
2
I Mechanism deck HALF switch input
I Input for test mode. (L : Test mode)
I Connect to Ground in this set.
O Not used in this set.
I Power detection input
O NR LED output (Not used in this set.)
O PLAYBACK LED output (Not used in this set.)
O Tape indicator LED output
O CD SYNC LED output
O REC LED output
) LED output
O
0 LED output
O
O PAUSE LED output
– 31 –
Pin Description
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2
switch input