Kenwood RXD-V313 Service Manual page 7

No. Name
75 SL -
76 SPEED B
77 SPEED A
78 AUDIO MUTE
79 MUTE
80 PIC LIMIT SW
81~86 –
87 CQCK
88 DAT
89 VSS
90 VDD
91 SQ OUT
92 RWC
93 RES
94 DRF
95, 96 N/C
97 CE
98 VOE
99 CS
100 RESET OUT
3. Key matrix
PORT SW 1 SW 2
Pin 19 Power Input
(K1)
Pin 20 Tuning Tuning
(K2) Up Down
Pin 21 CD CD
(K3) AMS + AMS -
Pin 22 CD CD Play
(K4) Stop Pause
4. All LCD light on mode
• The all LCD light up when the STOP key and TIMER SET key are pressed simultaneously, while the power is ON.
• When the ON/STANDBY key is pressed, the all LCD light on mode is canceled.
CIRCUIT DESCRIPTION
I/O Description
O Sled motor control (-)
O Speed control terminal to IC01 (LA9241)
O Speed control terminal to IC01 (LA9241)
O Audio mute control
O IC04 (BA6536S) mute control
I Pic limit switch input
– Vss
O Command clock output to IC2 (LC78630E)
O Command output to IC2 (LC78630E)
– Vss
– Vdd
I Sub-code Q input from IC2 (LC78630E)
O IC02 (LA9241), CE
O Chip reset out to IC2 (LC78630E)
I DRF from IC01 (LA9241)
– No used
O CE to IC001 (LC74201JE)
O VOE to IC001 (LC74201JE)
O CS to IC005 (LC74772V)
O Reset out
SW 3 SW 4 SW 5
Clock Timer Timer
Set Mode Set
Band Auto/ Auto
Mono Preset
– – Disc
Skip
– – –
RXD-V313
SW 6 SW 7 SW 8
– EQ Off Rock
Manual EX Bass –
Preset
Disc 1 Disc 2 Disc 3
– – –
Active
H L
O
On Off
CD Other
O
O
SW 9 SW 10
Jazz Pop
– –
Open –
Close
– –
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