Kenwood MDX-F1 Service Manual page 6

MDX-F1
Port # Port Name
31 FL DATA
32 NC
33 FL CLK
34 CD DOOR SW2
35 K DATA
36 MD DATA
37 DSCK
38 CD DATA
39 DSTB
40 SDA(EPROM)
41 SCL(EPROM)
42 MD RST
43 PDOWN
44 MD ST
45 SEARCH
46 LOAD SW
47 CD DOOR SW1
48 RDS DATA
49 MD NOT
50 F1/MICRO
51~56 NC
57~59 DSW0~DSW2
60 DSW3
61 VOL CLK
62 VCC(B.U.)
63 A120/70
64 AVSS
65 A/B-2
66 A/B-1
67 BT/2
68 REC/PLAY
69 BEAT CANCEL
70 BIAS
71 CPM
72 SOL
73 PLAY SW
74 CrO2 SW
75 PACK SW
76 REC F
77 REC R
78 VOL DATA
79 A MUTE
80 STBY
81 NC
82 POWER
83 FL RST
84 FL CE
85 ENC1
86 ENC2
87 LEDR
88 LEDG
89 PHOTO
90,91 KEY2,KEY1
92 NC
93 ADP3
94 ADP1
95 ADP2
96 AVSS
97 CE
98 VREF
99 VCC(B.U.)
100 CD POWER
6
CIRCUIT DESCRIPTION
I/O
O Output port for FL driver
O open
O Clock output port for FL driver
I CD DOOR OPEN sensor switch
O Data transmission port to MD(UART)
I Data input port from MD(UART)
O MD IC clock
O CD DSP data output port
O MD STB output port
- open
- open
O Reset signal port for MD
O MD POWER
O MD ON/CD SYNC
O MD SEARCH output port
I MD LOADING sensor switch input port
I CD DOOR sensor switch port
- GND
- GND
- GND
- open
- GND
I Destinations selector
O System IC
- Power supply port (+5V)
O Playback EQ selector
- GND
O Cassette deck operation mode selector
O Cassette deck operation mode selector
O Cassette deck operation mode selector
O Cassette deck rec/play mode selector
O Beat cancel control port
O Bias control port
O Cassette deck motor control port
O Cassette deck solenoid control port
I Cassette deck play switch control port
I CrO2 tape detection
I Cassette half switch control port
I Cassette deck forward rec switch control port
I Cassette deck revise rec switch control port
O System IC data port
O Audio mute control port
O STANDBY control port
O open
O MAIN POWER control port
O Reset signal output port for display
O Chip enable signal output port for display
I Rotary encoder input1 port
I Rotary encoder input2 port
O LED(STANDBY,RED) control port
O LED(TIMER,GRN) control port
I Cassette deck turning detection
I Key a/d converter input port
O open
I Protection signal I/o port 3(ON: less0.5V)
I Protection signal I/o port 1(ON: less0.5V)
I Protection signal I/o port 2(ON: less0.5V)
- GND(A/D)
I BACK UP detection port
- A/D converter standard voltage (+5V)
- A/D converter power supply(+5V)
O CD DSP power supply control
Descriptions
ACTIVE
H L
ON
RESET NORMAL
ON OFF
OFF ON
OFF ON
J TYPE M TYPE
REC PLAY
ON OFF
ON OFF
ON OFF
ON OFF
OFF ON
CrO2 NORMAL
OFF ON
OFF ON
OFF ON
OFF ON
OFF ON
NORMAL RESET
ON OFF
ON OFF
ON OFF