Circuit Description - Kenwood CD-403 Service Manual

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1. Microprocessor pin description : uPD780206GF059 (X32, IC15)
Pin No. Pin Name
1 VDD
2 LDC
3 STBY-LED
4 MON
5 SCLK
6 SENSE
7 CLOK
8 XLAT
9 DATA
10 RESET-1
11 X2
12 X1
13 NC
14 XT2
15 GFS
16 VDD
17 SQCK
18 NC
19 SUBQ
20 SYSM
21 CE
22 CLK
23 DATA
24 NC
25 AVSS
TE
L 13942296513
26 RMUTE
27 SDA
28 SCLK
29 SBUSY
30-32 KEY2-O
33 TYPE
34 AVDD
35 AVREF
36 POWER-K
37 S DATA
38 SCOR
39 REM
40 VSS
41 SCK
42 SGATE
43 SDATA
44,45 NC
46 VDD
47,48 NC
49 OPEN SW
50 CLOSE SW
51 UP SW
52 DOWN SW
53 SLTSW
54 CLOSE
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55 OPEN
56 RTR
57 RTS
58 RTL .
59 PSENSE
60 DSENSE
61 STANDBY
62 RESET-0
63-73 NC
CD-403/403-S/404/406/DPF-R3030/R3030-S/R4030/R4030-S/R6030

CIRCUIT DESCRIPTION

I/O Description
- Power supply(+5V).
O Laser signal output.
O STANDBY LED control output.
O Control terminal of spindle motor(ON/OFF).
O Sense serial data read clock.
I Sense input from CXD2587Q.
O Serial data clock.
O Latch output to CXD2587Q.
O Serial data output to CXD2587Q.
I Input terminal of system reset .
- System clock(5MHz).
I System clock(5MHz).
- Connected to VSS.
- Unused.
- Unused.
- Power supply(+5V).
O Q data reading clock output.
O Unused.
I Q data input.
O System muting control to CXD2587Q.
O Chip selector to dot driver.
I/O Clock in/out for dot driver.
O Data to dot driver.
I/O Unused.
- Connected to VSS.
O Analog muting control.
I/O EEPROM data input/output.
O EEPROM clock output.
I/O Serial busy signal output.
I Key input(key2-0).
Discrimination of model.
I
5V: CD-406 0V: CD-403/404
- Power supply(+5V).
- A/D reference power supply.
I Power key input.
I/O Serial data signal input/output.
I Sub code frame sync detection.
I Remote control signal input.
- Connected to VSS.
O Clock output to KAN03(IC9).
O Enable output to KAN03(IC9).
O Data output to KAN03(IC9).
- Connected to VSS.
- Power supply(+5V).
- Connected to VSS.
I Detection input terminal of tray open switch.
I Detection input terminal of tray close switch.
I Detection input terminal of mecha. UP switch.
I Detection input terminal of mecha. DOWN switch.
I Detection input terminal of start limit switch.
O Tray motor control.
O Tray motor control.
x O ao Rotary tray motor control. u163
y
O Rotary tray motor control.
O i Rotary tray motor control.
I Input terminal of mecha.position sensor.
I Input terminal of mecha disc sensor.
O ON/STANDBY signal input.
O Reset signal output.
- Connected to VSS.
2 9
8
Q Q
3 6 7 1 3 1 5
co
.
9 4 2 8
ACTIVE
H L
LD: ON
ON
MUTE ON
0 5 8 2 9 9 4 2 8
MUTE ON
KEY ON
TRAY OPEN
TRAY CLOSE
UP
DOWN
SW ON
m
CLOSE
OPEN
CW
DECELERATION
CCW
STANDBY
RESET
9 9
9 9
3