Kenwood MDX-F1 Service Manual page 7

5. Voltage Key Matrix
(port # of IC601)
Voltage of Key 0~0.35V 0.5~0.9V
KEY1(#91) SOUND REPEAT
KEY2(#90) POWER
6. MD System Microprocessor:IX0342AW(IC1401)
Port # Port Name
1 4M/16M
2 64M
3 LDVAR
4 ADJS
5 CIN
6 NC
7 UNLOCK
8 BYTE
9 CNVSS
10 STID OUT
11 SEACH OUT
12 RESET
13 NC
14 VSS
15 MCCK
16 VCC
17 NC
18 DINT
19 SFSY
20 ST-ID
21 SERCH
22 MDR SW
23 CDB SEL
24 DSENSE
25 PDOWN
26 HDON
27 EEPROM
28 4.23
29 EEPK
30 EEPD
31 MDDATA
32 KDATA
33 DSCK
34 DSTB
35 DATA
36 SBO
37 SBCK
38 LATCH
39 R/P
40 FOK
41 FLASH L
42 CLOCK
43 SYRS
44 SYRD
45 SYWR
46 FLASH H
47-54 SYSD(7-0)
55-59 SLOT(1-5)
60 NC
61 CRTRO SW
62 VCC
63 INNER
64 GND
65 L3DATA
66 L3MODE
67 L3CLK
CIRCUIT DESCRIPTION
1.0~1.5V 1.6~2.1V
MENU
MD
STOP
PLAY/PAUSE PLAY/PAUSE
I/O
I GND
I GND
O Laser power adjust port
O Check port
I Track count port
- No use
I GND
I GND
I GND
O ST-ID output port
O MD research port
I Reset signal input port
- No use
- GND
I 8.4672MHz
I +3.2v
I Connection to H level
I Interrupt signal from MD LSI
I Frame synchro
I ST-ID IN/MD ON/re-power after power breakdown
I CD search input port
O Save control motor drive
O CD BLK SEL output port
I Servo SENSE signal form MD LSI input port
I Power down detection port
O Current control of record head
O Cancel signal output port to EEP-ROM
O 4.23MHz
O EEP-ROM serial clock port
I/O EEP-ROM data I/o port
O MD data output port
I System data input port
I System synchro clock input port
O System line busy or to permit usage
O R data
I Serial data in sub code input port
O System line of serial clock in sub code output port
O R-latch
O Rec/play selector
I Focus servo monitor port
I No use
O R clock
O MD LSI resister selector output port
O MD LSI read signal output port
O MD LSI wright signal output port
I No use
I/O MD LSI data bus(0-7)
I No use
O No use
I GND
I +3.2V
I Pickup start position detection port
- GND
O AD/DA serial data output port
O AD/DA serial mode output port
O AD/DA serial clock output port
2.2~2.8V 2.9~3.4V 3.5~4.0V
SET MD EJECT MD REC
CD TUNER TAPE
FM/AM PLAY
Description
MDX-F1
4.1~4.6V 4.8~5.0V
- TAPE REC OFF
SKIP
SKIP UP OFF
DOWN
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