Kenwood RD-VH7 Service Manual page 8

RD-VH7
QQ
3 7 63 1515 0
9. Common Operation in AUX/TUNER Test
Mode
9-1 Bias and Main Volume Level
Set unit to aux or tuner test mode.
Select the proper value with CD PLAY/PAUSE or CD
STOP key.
volume
0 pure A low
1 pure A low
20 pure A mid
40 pure A high
80 pure B low
Multi control knob is available for same setting after
mode key is pressed.
10. MICROPROCESSOR ; M30622MC-570FP(X09,IC4)
10-1 MICROPROCESSOR PERIPHERY BLOCK DIAGRAM
X09, IC400
CD ASP
LA9241M
CD MECHA.
TE
L 13942296513
CDM-34
X09, IC5
DISPLAY u-COM
HD6433297A17F
LCD DRIVER
SED1565
KEY MATRIX
www
* REFERENCE VOLTAGE: 5.0V
0.000
VOLTAGE
1.061
KEY1
.
89PIN
KEY2
90PIN STOP
KEY3 SKIP
91PIN UP
8
CIRCUIT DESCRIPTION
bias display D
PURE#A#L
PURE#A#L
PURE#A#M
PURE#A#H
PURE#B#L
X09, IC401
CD DSP
LC78628E
X09, IC4
M30622MC-570FP
SL16
1.061 1.726 2.437
x ao
y
1.726 2.437 3.156
MODE
i
SKIP PLAY/PAUSE INPUT
DOWN
TUNING TUNING
EJECT UP DOWN
8
9-2 FAN Operation
Display C shows fan condition.
FAN Display C
off FAN#OFF#
low FAN#low#
high FAN#Hi##
X09, IC2
Q Q TUNER UNIT
3 6 7 1 3
(RDS DECODER)
E/T ONLY
RELAY (PWER, SP, HP)
FAN
BIAS
MUTING
PROTECTION
REC OUT SEL
LED
KEY
ENCODER
AUDIO L E V E L
D E S T I N A T I O N
TILT SENSOR
HEADPHONES D E T E C T O R
REM BACK UP
LCD
3.156 3.827 4.586
u163
3.827 4.586
POWER KEY
.
OFF
BAND KEY
OFF
AUTO/MONO KEY
OFF
2 9 9 4 2 8
SYSTEM IC
LC75396NE
1 5 0 5 8 2 9 9 4
m
co
9 9
2 8 9 9