Parts - Pioneer CT-W208R Service Manual

CT-W208R

7.2 PARTS

7.2.1 IC
• The information shown in the list is basic information and may not correspond exactly to that shown in the schematic diagrams.
PD5351A (MAIN UNIT : IC501)
• U-COM IC
•
Pin Function
No. Pin Name I/O
1 VCC I Power supply 5V
2 AREF I AREF is connected to 5V
3 AVSS I AVSS is connected to GND.
4 METL I L ch level meter input
5 METR I R ch level meter input
6 KEY2 I
7 KEY1 I Key scanning input (Key switch A/D input)
8 KEY0 I
9 SEN1 I Take-up side sensing puise.Primary side input
10 SEN2 I
Take-up side sensing puise.Secondary side input
DOLBY NR SW, REVERS SW DC input
11 SW0 O
12 DOLO O DOLBY NR control When Dolby NR OFF,
DOLO:"H". When Dolby NR B, DOLB: "H".
13 DOLB O
14 MOD2 I
15 CRO2 I Mechanical SW input voltage
16 HAF2 I "L" when all the following SWs are ON.
17 FRC2 I Mode SW, chrome SW, half SW,
18 MET2 I forward record disable SW, metal SW,
19 RRC2 I reverse record disable SW.
20 MOD1 I "L" when all the following SWs are ON.
21 CRO1 I Mode SW, chrome SW, half SW.
22 HAF1 I
23 VLED I Power supply SW version select input.
24 VTAC I Power SW Without LED VTAC: L, VLED: L.
25 REMT I Remote commander signal input
26 NVSS I Chip operation mode control. Connected to GND.
27 REST O Reset signal input. ("L" when reset.)
28 POFF I Power off signal input. ("H" when power off.)
29 PD O Connected to pull-down resistor.
30 XIN I
Connected to the main clock (6.3 MHz)
31 XOUT O
32 VSS I Power supply GND
32
Pin Function No. Pin Name I/O
33 SLD5 O
34 SLD4
O
35 SLD3
O
36 SLD2
O
37 SLD1
O Display output
38 SLD0
(Soft scanning output)
O
39 GLD3
O
40 GLD2
O
41 GLD1
O
42 GLD0
O
43 OKY2 O
Output for detecting Dolby NR SW,
44 OKY1 O
REVRS SW.
45 OKY0
O
46 PD Connected to a pull-down ressistor.
O
47 CDSY CD SYNCHRO input/output
I
When SYNCHRO jack IN, "L" input.
48 FRCD I
During CD play, "L" input. When
49 TOCD SYNCHRO REC, TOCD is output in "H".
O
50 TP1 O
TP0
51 TP0 O
TP1
Motor speed adjustment. When X1, "H"
52 X1
O
Deck 1 side mechanical control output
53 SOL1
O
Solenoid control
54 CPM1
O
Capstan motor control
Deck 2 side mechanical control output
55 SOL2
O
Solenoid control
56 CPM2 O
Capstan motor control
57 MRCV O Meter circuit recovery time control.
O
58 MGAN Meter circuit gain select. (When MS, "H")
59 PBNR When a normal tape is played back, "H"
O
60 2PB When deck 2 is played back, "H"isoutput
O
61 DEC O DECODE/ENCODE output.
62 BIAS O BIAS control.(When bias ON, "H".)
63 RMUT O REC MUTE control. (When MUTE "L".)
64 LMUT O LINE MUTE control. (When MUTE "L".)
Pin Function
NOR CRO MET
H:5V
L H L
L:GND
L L H