Kenwood KRC-666, Service Manual

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KRC-666/G/R
7
MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No. Name Module I/O Description Processing Operation
FWD input :L
93 F/R TAPE O Tape EQ input switching REV input :H
MODE except TAPE :keep the value
94 METAL TAPE O TAPE METAL ON/OFF
NORMAL :H, METAL :L
MODE except TAPE :keep the value
95 DAVSS Power supply
96 EN2 Power supply O Power supply IC control Refer to "Trush table 3"
97 EN3 Power supply O Power supply IC control Refer to "Trush table 3"
98 EN1 Power supply O Power supply IC control Refer to "Trush table 3"
99 SW5V Power supply O SW5V control
100 DAVDD Power supply Reference power supply for D/A
MODE1 MODE2 MODE3 condition
L H H Eject
H L H Standby
L L L REW
L L H FF
H L L REV play
H H L FWD play
H H H other position
Trush table 1. (Cassette mechanism conditions)
SUB MOTOR + SUB MOTOR - condition
L L Stop (Power off)
L H Normal rotation (way to loading)
H L Reverse (way to eject)
H H Stop (Power on)
Trush table 2. (Cassette mechanism sub motor)
EN1 ILL
L OFF
H ON
Trush table 3. (Power supply IC [TDA3682])
EN1 Control
Model number TYPE0 TYPE1 TYPE2 ST TYPE0 ST TYPE1
KRC-766 L L L L L
KRC-694/Y L L H L L
KRC-666R L H L L L
KRC-594/Y L H H L L
KRC-594V/YV H L L L L
KRC-666 H H L L L
Trush table 4. (Destination type list)
Processing intructions for low consumption mode
POWER OFF O L
ACC OFF I Hi-z
Detached the panel I Hi-z
Momentary power down
I Hi-z
(Attached the panel)
Trush table 5. (Panel 5V)
EN2 AUDIO 8V AM 8V FM 8V
L OFF OFF OFF
M ON OFF ON
H ON ON OFF
EN2 Control
EN3 P-ANT P-CON
L OFF OFF
M OFF ON
H ON ON
EN3 Control
*H=5V M=2.5V L=0V
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