Pioneer CT-W208R - Dual Cassette Deck Manual de serviço - Página 32

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Pioneer CT-W208R - Dual Cassette Deck Manual de serviço
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