Diagrams; Ic Pin Description - Sony TC-WE425 Service Manual

5-1. IC PIN DESCRIPTION

• IC801 CXP82220-051Q (SYSTEM CONTROLLER)
Pin No. Pin Name
1 A-PLAY
2 POWER IN (CED)
3 —
4 SIRCS
5 —
6 RECVOLOUT
7 —
8 BUSIN
9 POWER OUT
10 POWER IN (U)
11 A-SHUT
12 A-SHUMIT
13 CAPM (H/L)
14 PITCH.CON
15 —
16 BUSOUT
17 LINE MUTE
18 LPF
19 RECMUTE
20 B-BIAS
21 NR SW
22 B-IV
23 PB SELECT (A/B)
24 REC/PB
25 PBEQ (HIGH/NORM)
26 NR/MUTE/PASS
27 AMSOFF/AMS/BS
28 B-RELAY
29 B-SHUT
30 B-SHUMIT
31 B-PLAY
32 B-HALF
33 METER (L)
34 METER (R)
35 KEY3
36 KEY1
37 KEY2
38 RESET
39 XIN
40 XOUT
41 VSS
42 —
43 —
44 KEY4
45 RECVOL IN
46 —
47 —
48 – 50 —
51 ARL (LED)
52 SYNC (LED)
53, 54 —
SECTION 5

DIAGRAMS

I/O
I Play switch input (DECK A)
I Power-in detection input
— Connected to ground.
I Sircs signal input
— Connected to ground.
O Record level control output (PWM)
— Not used in this set.
I Control A signal input
O Power hold output
I Power-in detection input
I Capstan motor rotation detection input (DECK A)
I Capstan motor rotation detection input (DECK A)
O Capstan motor high/normal select output "L":ON
O Pitch control ON/OFF output "L":ON
— Not used in this set.
O Control A signal output
O Line mute ON/OFF control output "L":Mute ON
O Low pass filter on output
O Recording mute output "L":Mute ON
O Bias ON/OFF output (DECK B) "H":ON
O Dolby selector "H":C, "Open":B, "L":Dolby off
I Metal detection input (DECK B)
I Playback A/B selector input "L":A, "H":B
O Record/playback dolby NR mode selector output "L":Playback
O PB EQ high/normal select output "L":Normal
O Audio selector "H":Pass, "Open":Mute, "L":Dolby
O AMS amp selector "H":BS, "Open":AMS, "L":OFF
O Relay record/playback selector output (DECK B) "L":Record
I Capstan motor rotation detection input (DECK B)
I Capstan motor rotation detection input (DECK B)
I Play switch input (DECK B)
I Half switch input (DECK B)
I Meter L-CH input (A/D converter)
I Meter R-CH input (A/D converter)
I Key 3 input (A/D converter)
I Key 1 input (A/D converter)
I Key 2 input (A/D converter)
I System reset input
I System clock oscillator input (10 MHz)
O System clock oscillator output (10 MHz)
— Ground
— Connected to ground.
— Connected to ground.
I Key 4 input (A/D converter)
I Record volume input (A/D converter)
— Connected to power supply.
— Connected to ground.
— Not used in this set.
O AUTO LED driver "H":ON
O SYNCHRO LED driver "L":ON
— Not used in this set.
– 14 –
Pin Description