Kenwood DMF-9020 Service Manual

DMF-9020/9020(S)/MD-2070
5
BLOCK DIAGRAM
RF,TE,FE,SE
CONT,BUS
APC REF
I,J,
A,B,C,D,E,F
SPINDLE
FEED
FCS,TRK,SPIN,SLED PWM
AUDIO
SYSTEM
AC
TRK FCS
-VFL
512fs
256fs
MECHA: MDM-04 (X33-1100-00)
(X25-617X-XX)
(X00)
(X14-4380-00)
MAIN (MECHA.)
u-COM
UPD784215GF533
256K SRAM
IC31
POWER
TRANSFORMER
FILTER
LINE
AVR
AVR
AVR
AVR
ANALOG 5V
DIGITAL HEAD MOTOR
+5V
BACK-UP
ACIRC
DSP
SERVO
ATRAC
MEMO. CONT
(CXD2652AR)
(CXA2523AR)
RF AMP
IC1
SERVO
(BH6511FS)
MOTOR
DRIVER
IC2
IC8
M
M
M
PLAY POS. SW
DRAM
IC7
PICKUP
KMS-260A
FL
ED1
FL DOT MATRIX
DRIVER
IC1
KEY
MATRIX
TIMER SW
IC2
JOG
REC SW
REFRECT SW
PROTECT SW
START LIMIT SW
DISC IN SW
BUFFER
IC37
REG.
+3.3V
DIGITAL+5V
5.0V
LOADING MOTOR
FEED
MOTOR
Q7
LASER DRIVE APC
DISC
MOTOR
DISC
IC35
MOTOR
DRIVER
PHONES
OUT
IN
LINE
OPT.
COAX.
OPT.
KEY
BOARD
REC
IN
OUT
PLAY
TEMP. DET.
AC
u-COM VDD
u-COM +5V
33V
FL AC
DIGITAL
IC5
HEAD
RECORDING
CONTROL
REMOTE
3.3V
E PROM
2
HEAD DRIVER
3.3V 5.0V
12V
3.3V 4Mx1
SENSOR
24bit RESOLUTION
D/A CONVERTER
DIGITAL
DIGITAL
24bit
OSC
ANALOG
IC11 (2/2)
MUTE
Q16-19
IC22 (1/2)
IC21 (1/3)
IC21 (2/3)
IC10
IC6
IC39 (2/2)
FIP12XM1GA
A1
S25
S3
IC34
IC39 (1/2)
IC7
IC13,14
J1
A1
A2
J7
D1
Q42,44
Q11
Q7,8
Q13
IC24 IC25
IC15
SRAM +5V
SHUNT
OUT
IN
ANALOG
2V/0.3K
0.5V/22K
15~ 21dBm
0.5Vp-p/75COAX.
DIGITAL (IN/OUT)
OPT.
5.0V
IC38
3.3V
D.R.I.V.E.
KAN06
SM5844AF
SAMPLING
CONVERTER
RATE
DIGITAL
X1
22.5MHz
IC26
REC
PLAY
(ANALOG)
IC10 (2/2),
A/D CONV.
(CS5360)
IC8
20bit
IC10 (1/2),
IC11 (1/2)
DATA
DEMOD.
DET.
SUBCODE
(LC8904Q)
RECEIVER
DIGITAL
INTERFACE
IC21 (3/3)
IC22 (2/2)
DIGITAL
1
3
2
DIGITAL
L1S1
D31,32
NON REG.
(LC89170M)
DECODER
CD TEXT
IC27
CD TEXT)
SUB u-COM
(TITLER and
IC28
256K SRAM
IC29
SYSTEM
CONTROL
SL16
J5
CONTROL
SYSTEM
(LC75710NE)
VR2
MUTE
Q7,8
DIGITAL
ANALOG
IC23
I/O
EXP.
IC32
IC36
COAX.
COAX.
D11
REC LEVEL
BALANCE
LOADING
VR1
DMF-9020(K) INT1,1P( 98.11.26 5:24 PM y[W 10

Kenwood DMF-9020 Specifications

Digital Audio System

playing rotation	Approx. 400 rpm ~ 900 rpm (CLV)
frequency response (playback mode)	8 Hz ~ 20 kHz (± 1 dB)
signal to noise ratio (playback mode)	More than 112 dB

D/A and A/D Conversion

D/A conversion	1 Bit (24 bit type)
oversampling	8 fs (352.8 kHz)
A/D converter	4th order sigma-delta conversion+ D.R.I.V.E. conversion

Input and Output

analog input sensitivity / input impedance	500 mV / 22 kW
analog output level / output impedance	2.0 V / Less than 300 W
headphone output	50 mW/32 W load (Phones level MAX)

General Specifications

power consumption	20 W
dimensions	W: 440 mm, H: 125 mm, D: 373 mm
weight (net)	5.4 kg (11.9 lb)