2. Remove the 11 screws(3), then remove
the X07PCB.
3. Put the cover (4) and the X07PCB (5) on
the power transformer.
4. Connect GND between the rear panel and
the X07PCB with an alligator clip wire(6).
5. Push the JOG knob by a inserting +
screw driver in the hole of the front panel
back(7).
6. Turn the friction arm fully counterclockwise
w
using a screw driver and the like (8).
7. Pull out the tray front wards by hand when
the tray just comes out(9).
w
.
1), then remove
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6
3
.
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3
APB
B R/P
B ERASE
BIAS
OSC
CTRL
BIAS
VR5
HA12219NT
IC1
HA12136A
IC2
MPX
DPSS
IC4
HD74HC166P
FL DISPLAY
ED1
M66004SP
IC51
DRIVER
REMOCON
A1
D52
TIMER
D51
STANDBY
KEY
MATRIX
ENHANCED IC
FOR LED
IC52,53
JOG AJOG B VOL.
BU2090
+12V
AVR
Q4
AVR
Q3
-12V
-12V
+12V
AVR
IC2
+5V
AVR
IC1
+9V
RDS
CD +9V
-B
GND
+B
-35V
AVR
Q8
FL-REF
FL -35V
Q2
+5.6V AVR
uCOM
FAST OFF
FL AC
IC
for
POWER
RF AMP
CXA1571M
IC5
E-VOL
TUNER
DECK
TUNER
E-VOL
FL IC +5V
u-COM
PULL UP
DRIVER
TRACKING COIL
4ch BTL DRIVER
BA5979S
DRIVER
FOCUS COIL
DRIVER
FEED MOTOR
DRIVER
DISC MOTOR
IC6
A
B
C
E
F
SW
LD
Q501
DSP.SERVO.
CXD2587Q
IC7
DAC
CD +5V
CD +9V
(DSP,RF)
Q505
FM
DM
TA8409S
(ROTARY TRAY)
TA8409S
(LOADING)
LM
RM
IC8
IC9
M30622MC-525FP
u-COM IC
IC1
IC2
K1
120V240V
MD/DVD
MD REC
J1
SURROUND
3BAND TONE
EX-BASS
M62492FP
SELECTOR,
RDS
DEMODULATOR
IC3 (T,E,Q TYPE ONLY)
SAA6579T/R
MODULE
TUNER
ANT.
POLAR
UNIT
S1
OFF
ON
ON/OFF
MATRIX
K1
RELAY
SPEAKER
ch.
OTHER
PRE OUT
SUB
Lch
Rch
FRONT SP.
M TYPE ONLY
OPTICAL
OUTPUT
A501
INPUT
OUTPUT
0.4V/47K
1.0V/10K
EXCEPT USED
(K,P)TYPE
IC3
C33,34
L1,2
BIAS
VR3,4
Q11,12 Q4
Q13,14
Q10
Q6,8
DOLBY B
RXD-652/E/W
EXCEPT USED
L3,4
IC6
DOLBY
PROLOGIC
IC10
OTHER CH.
SURROUND,
TON,E-VOL
J1
IC11(2/2)
IC12(1/2)
IC12(2/2)
IC11(1/2)
Q1,2
Q6
Q5
Q3,4
Q8
Q7
LPF
IC3(2/2)
IC3(1/2)
LPF
IC1
IC2(1/2)
IC2(2/2)
A1
IC13
Q301-303,
305-307
Lch
Rch
Rch
Lch
K2
-BV
GND
+BV
D2
D15-18
D1
D3
S2
S1
AC IN
S28S29S27
RXD-852/E/W
RXD-652/E/W
RXD-A601/A701
USED
RXD-A601/A701
RXD-852/E/W
RXD-652/E/W
EXCEPT USED
IC5
RXD-652/E/W
USED
EXCEPT USED
RXD-652/E/W
RXD-852/E/W
RXD-A601/A701
LEVEL
REC
J1
SUPER WOOFER SP.
SURROUND SP.
CENTER SP.
SURROUND SP.
(MATRIX)
SP.OUTPUT
J2
RXD-652/E/W
RXD-A601/A701
RXD-852/E/W
USED
J4
1
RXD-852/E/W
RXD-A601/A701
RXD-652/E/W
USED
EXCEPT USED
RXD-652/E/W
RXD-A601/A701
RXD-852/E/W
RXD-652/E/W
RXD-852/E/W
RXD-A601/A701
USED
RXD-852/E/W
RXD-A601/A701
RXD-652/E/W
EXCEPT USED
J3
RXD-A601
RXD-A601
EXCEPT
Q TYPE
USED
RXD-A601/A701
RXD-852/E/W
RXD-652/E/W
USED
MODEL
RXD-652/E/W
OTHER
2.0V/600
1.8V/600
RXD-A601
OUTPUT
WOOFER
B
A
REQ EQ
BIAS TRAP
PH A,B
MOTOR A
MOTOR B
MOTOR
SOL A,B
SPEED
TAPE
A/B
MOTOR
SOL A,B
VR7,8
LEVEL
B PB
LEVEL
VR1,2
A PB
PH A,B
B.CANCEL
BIAS
NOR
A-N/C
A/B
B1/2
DOLBY
R/PDPSS
A,B CrCO2
L REC
R REC
A,B PACK
A,B PLAY
PSIN
CLK
PSLOAD
GRID
SEG1635
CLK
CS
DATA
KEY3
KEY2
KEY1
DATA1/2
CLK
15LED
A JOG
1/21/2
B JOG
1/2
ENC
+
+
+
+
+
+
RF.FE.TE
16.93MHZ
LOM+/-
ROM+/-
PHTR
TD/TU
CL/OP
PSW
MAIN
10MHz
SUB
32.768KHz
DATA
CLKMPX
TAPE REC
CLK
LATch
DATA
DIGITAL
ANALOG
FL/FR
S
C
MUTE
-20dB
+
+
21.9V/6
RXD-A601
RXD-A701
RXD-852/E/W
13.4V/6
13.4V/6
10.95V/6
20.5V/6
20.5V/6
17.3V/610.95V/12
13.4V/12
13.4V/12
1kHz,1.0%
18.2V/6RXD-652/E/W
MODEL
10.95V/6
1kHz,10%
17.3V/6
1kHz,10%1kHz,10%
10.95V/12
2CHFRONTSURROUNDCENTER
STEREOSURROUND
21.9V/6
17.3V/6
1kHz,0.9%
1kHz,1.0%
RXD-702/E/W
RXD-752/E/W
1kHz,0.9%
24.5V/6
RXD-772S
RXD-A81
MODEL
STEREO
FRONTS.WOOFER
60Hz,10%
21.9V/6 24.5V/6
24.5V/6
HP DET
MECHA.
DECK
(X28)
(X14)
(X00)
(X14)
(X04)
(X13)
MGC-E9001
CD MECHA.
Q TYPE ONLY
RXD-852/E/W
(X07)
RXD-752/E/W
RXD-702/E/W
RXD-652/E/W
RXD-A701
RXD-A601
RXD-A81
RXD-772S
www.denom.net
RXD-652/702/752/772S/852/A81/A601/A701
4
7
139
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TEL 13942296513 QQ 376315150 892498299
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BLOCK DIAGRAM
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RXD-652/702/752/772S/852/A81/A601/A701
CIRCUIT DESCRIPTION
7
1. Initialization
Q
Q
1-1 Setting of initial conditions
1-2 Initializing operation
TEL 13942296513 QQ 376315150 892498299
1-3 Initial items and back up data
AMP*AUTO POWER SAVEOFF
TEL
www.denom.net
TUNER *FREQUENCYLOWEST FREQUENCY
CLOCK *PROG. RECORDINGON/OFF TIME
DECK*RVS MODEREVERSE (U MODE)
1-4 Mechanism initialization
1-4-1 CD mechanism
1-4-2 DECK mechanism
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3
While pressing the [ENTER] key, put the plug into an AC
power outlet.
• A microcomputer is initialized for start when the AC
power is turned on when pressing the [ENTER] key. At
that time, CD mechanism and CASSETTE mechanism
are also initialized.
• During the initial operation,the display shows INITIALIZE
and after that it will be returned to STANDBY condition.
*POWERSTANDBY
*VOLUME14
*BALANCECENTER
MUTINGOFF
PROTECTIONOFF
S. DIRECTOFF
SUPER WOOFER
(RXD-752/E/W)+3
DISPLAY MODEAUTO
*MD/DVD INPUT LEVEL -3
*INPUT SEL.TUNER
(LISTEM MODE)
DOLBY PROLOGICOFF
DOLBY 3STEREOOFF
13942296513
DOLBY VIRTUAL
CENTER SP.EXIST(SMALL)
SURROUND SP.EXIST
DELAY TIME20 msec.
*BANDFM
(1) The muting during mode selection is not controlled in
the test mode.
(2) The test mode is cancelled when the AC power is
turned off.
(3) The operation of the keys in the test mode as follows.
3-1-5 The operation of the keys in the test mode
(1) common (TUNER. AUX mode.)
Display/DEMO FL&LEDsON/OFF
REV. MODEVolume 1
TEL 13942296513 QQ 376315150 892498299
www.denom.net
6
DOLBY NR
or TAPE EQ
REC/ARMVolume MAX
A/BREC levelHíîL
DISC 3BALANCE LEVEL
(2) TUNER mode
TAPE 7
TAPE #P.CALLDOWN
TAPE @P.CALLUP
DISC SKIP
TEL
OPEN/CLOSE (M TYPE) CHANNEL
(3) AUX mode (AMP,GE)
DISC 2DVD OUTPUT Level
DISC 1EQ ALL BAND
DISC SKIP
* TAPE 7S.direct íî Effect off
* TAPE #
M
S
* TAPE @
O
U
D
R
* TAPE ¡CENTER LEVEL up
E
R
O
* TAPE 1CENTER LEVEL DOWN
O
U
* CD ^SURROUND LEVEL UP
N
N
* CD 7SURROUND LEVEL DOWN
L
D
* TUNING DELAY TIME
Y
MODE20ms î 30ms íî 15ms
** BACK
w
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**SUPER WOOFER Level
OPEN/
CLOSE
7
3
KEYFUNCTION
KEYFUNCTION
6
Volume 28
10STEP P.CALL UP.
S.LEVEL ATT.
3
1
13942296513
SPACE/EMPHASIS
KEYFUNCTION
O (MAX)íî -7
MUTE ON/OFF
(FL "TESTMODE" blink up)
DOLBY SURROUND MODE
CENTER MODE
3D Level
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0
Q
1
* USED RXD-652/E/W
** EXCEPT USED
3-2 Test mode of cassette deck
3-2-1 Setting of the test mode
While pressing the [deck play] key, put the plug into an
AC power outlet.
3-2-2 Canceling of the test mode
Unplug an AC power cord from an AC power outlet.
3-2-3 Condition in test mode
(1) Initial condition
• DOLBY-0FF
• AUDIO-MUTE OFF
(2) Mechanism SW detection
A pack SWE.Q
A -CRO2PROG.12
B-FWDO.T.T
B pack SWAUTO
B-CRO2ST
B-RVSANTENNA
(3) 4-sec recording
3
Q
If the REC key is pressed, the system record for 4
sec. Then, it rewinds to the recording starting position
and plays back automatically.
If the REC key is pressed, during the 4-sec recording
operation, the system records further for 4-sec, then
return to the starting position of the first 4-sec recording operation and plays back.
(4) TUNING MODE key
REC Level HíîL
3-3 Test mode of CD player
3-3-1 Setting of the test mode
While the pressing the [CD PLAY/PAUSE] key, put the
plug into an AC power outlet.
3-3-2 Canceling the test mode
Press the stop key on stop mode or unplug the AC cord
from an AC power outlet.
3-3-3 The operation of the keys in the test mode.
KEYDISPLAYOPERATION
PLAY/PAUSE
+AC IN
STOP0
PLAY/PAUSE
1FINISH • Tray 1/3 rotation.
DISC3
6
3
DISC2216**:**
DISC1
8
RXD-852/E/W
RXD-A601/A701
RXD-652/E/W
RXD-852/E/W
RXD-A601/A701
1
3
6
7
CD TEST
03 --:-05**:**
07 EF/FB
08 TG/FG
09 TE/RF
10 TE/VC
.
4
2
9
DISPLAY
0
5
1
5
• Setting of the test mode.
• Tray 1/3 rotation.
• Tray opens automatically.
• Tray closes.
• Change or cancel the test mode.
• Tray closes/disc clamps.
• T-servo off(03) or on (05).
• Mechanism stops when the
automatic adjustment is finished.
• Display changes cyclically.
• If NG, display blinks up.
c
o
• Tray closes.
• Disc2 clamps.
• Plays track 16.
• Tray closes/disc clamps.
• Plays track 32.
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2
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RXD-652/702/752/772S/852/A81/A601/A701
X28(IC1)
CD MECHA
DECK PLAY/REC EQ IC
DECK MECHA
X14(IC51)
X13(IC1)
X13(IC2)
DOT DRIVER
AUDIO CONTROL IC
X14(IC52,53)
X13(A1:IC2)
MAIN U-COM
LED DRIVER x 2
PLL IC
M30622MC–526FP
X13(IC7)X28(IC4)
DSP/DAC IC
EXPANDER IC
X13(IC10)X13(IC3)X13(IC14)
DOLBY PROLOGIC IC
DECK PORT DRIVER
4-2 VOLTAGE KEY MATRIX
INPUT VOLTAGEKEY1KEY2KEY3
(V)(HEX)Pin97Pin95Pin94
0.00~0.2600H~0DHDISC SKIPBANDTUNING
0.27~0.810EH~29HDISC2EX. BASS (SW)DISP./DEMO
0.82~1.372AH~46HCD STOPENTERINPUT
1.38~1.9447H~63HOPEN/CLOSERWDSELECT
1.95~2.5164H~80HA/BFFRVS. MODE
2.52~3.0781H~9DHFWD PLAYPLAY/PAUSETAPE STOP
3.08~3.629EH~B9HRVS PLAYDISC1REC
3.63~4.16BA~D5HDOLBY(T.EQ.)POWERDISC3
4.17~4.73D5~F2HNO KEYMENUBACK
4.74~5.00F3H~FFHKEY OFFKEY OFFKEY OFF
CIRCUIT DESCRIPTION
4. Main microprocessor M30622MC-526FP (X13:IC1)
Q
Q
4-1 Microprocessor periphery block diagram
TEL 13942296513 QQ 376315150 892498299
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7
RXD-652/702/752/772S/852/A81/A601/A701
CIRCUIT DESCRIPTION
4-3 Pin description
Q
Q
PinNameI/O
1D-DATAOPDDOLBY DIGITAL IC (CXD2724Q)
2D-CLKO–DOLBY DIGITAL IC (CXD2724Q)
3PLLDATA OPDPLL IC DATA (LC72131)
4STIPUSTEREO INPUT
5PLLCEOPDPLL IC CE (LC72131)OUTPUT
6RDSDATA IPDRDS DATA (SAA6579)INPUT
7PLLCLKOPDPLL IC CLOCK (LC72131)OUTPUT
8BYTEIVSS 8/16 BIT CHANGEOVER
9CNVSS– VSS GND
77CPMOPDDECK MOTOR CONTROL
78PSCLKOPDEXPANDER IC(HD74HC166P)
79PSINIPDEXPANDER IC(HD74HC166P)
80PSLOADOPDEXPANDER IC(HD74HC166P)
81AMUTEOPDAUDIO MUTE
82ATTOPD10dB ATTENUATOR L: ON H : OFF
83POWEROPDPOWER RELAY CONTROL H: ON
84PROTECT IPDPROTECT DETECT (VOLTAGE DETECT)
85SPRELAY OPDSPEAKER RELAY CONTROL H: ON
86 STBY-LED OPDSTANDBY LED CONTROL H:ON L:OFF
87 TIMER-LED OPDTIMER LED CONTROL H:ON L:OFF
88A.SOLOPDA DECK SOLENOID CONTROL
89SPEANAIPDAUDIO SIGNAL INPUT(A-D)
90MODELIPDMODEL DISTINCTION INPUT(A-D)
91TYPEIPDTUNER DESTINATION DISTINCTION
92DPSSIPDDPSS INPUT(A-D)
93SLEVELIPDRDS S LEVEL INPUT
Step 1,2 are in TEST MODE
TEST MODE : While pressing the [CD PALY] key, plug the AC power cord into the AC power wall outlet.
1
TEL 13942296513 QQ 376315150 892498299
2
Note:
Type 4disc :SONY YEDS-18 Test Disc or equivalent. (KTD-02)
LPF : Around 47k½ + 390pF or so.
(a) Laser Power(b) Test point
3
ITEM
LASER
POWER
FOCUS
ERROR
BIAS
6
INPUT
SETTING
–
Test disc
Type 4
1
3
0.05~0.15 mW
5
OUTPUT
SETTING
Set the senor section
of the optical power
meter on the pickup
Connect an oscillo-
scope as follows.
CH1 : RF
CH2 : FE1
GND : VC
lens.
1
5
0
PLAYER
SETTING
Press the"PLAY"key
to check that the dis-
play is "03".
Press the "PLAY"
key. Confirm that the
display is”05”
9
8
ALIGNMENT
POINT
–
FE
BIAS VR1
4
2
9
ALIGN FOR
On the power
from.0.05 to 0.15mw.
when the diffraction
grating is correctly
aligned with the RF
level of 0.8Vp-p or
more
Optimum eye pattern
(DC=±330mV)
8
2
9
FIG.
(a)
(b)
(d)
9
TEL 13942296513 QQ 376315150 892498299
TEL
www.denom.net
(d)
RF signal in test mode (PLAY).
Perform the tangential and focusing offset are focused
into one point on the display. The crossing points above
and below the center shall also be looked clearly.
13942296513
Pickup
RF signal FAC coupled
Optical power meter
Q
Q
3
7
6
3
1
5
1
5
0
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9
2
4
9
8
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RXD-652/702/752/772S/852/A81/A601/A701
{
(A)(B)
X28, CN1
L OUT
R OUT
R OUT
R IN
L IN
GND
1
2
3
4
5
6
8
7
9
10
11
AC voltmeterAG
Oscilloscope
AC voltmeter
Frequency counter
Solder with
some lead
wires.
ADJUSTMENT
7
Cassette Deck adjustment
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL
www.denom.net
3
No
Unless otherwise specified, set the respective switches as follows:0dBs=0.775V
TAPE : NORMAL DOLBY : OFF PLAY OUT : Lch (X28,CN64pin), Rch (X28,CN66pin)
ø. Cassette mechanism unit (Adjustment of the REC / PLAY head)
Demagnetization
q1 r
q2 r
¿. PC BOARD ADJUSTMENT
q1 r
¡. PC BOARD ADJUSTMENT
q1 r
and cleaning
Azimuth of the
REC/PLAY head
SPEED(NORMAL)
13942296513
PLAYBACK
6
ITEM
TAPE
LEVEL
1
3
INPUT
SETTING
\
TCC-153
MTT-114
10kHz, - 10dB
TCC-110
MTT-111
SCC-1727
3kHz
MTT-256U,
TCC-160
315Hz, 0dB
5
1
OUTPUT
SETTING
5
\
iB j
iB j
iB j
0
SETTING
Demagnetization:
POWER OFF
Cleaning: PLAY
Q
Q
DECK
PLAY
PLAY
3
PLAY
7
8
6
3
1
2
9
ALIGNMENT
POINT
Recording
head, erase
head,capstan
pinch roller
FWD RVS
A/B DECK
VR 5
5
1
5
A DECK
VR 1 (L)
VR 2 (R)
B DECK
VR 7 (L)
VR 8 (R)
4
9
ALIGN FOR
Demagnetize the
REC / PLAY head
with the head eras-
er.Clean the REC /
PLAY head, erase
head,capstan and
pinch roller using a
cotton swab slightly
damped with alcohol.
Adjust the output to
maximum and adjust
the azimuth adjustment screw for the
Lissajours waveform
pattern of the oscillo-
scope to become
close to a 45°
straight line.
Adjust the tape
speed so that 3kHz
is obtained at the
center of the tape.
9
8
0
Adjust the playback
output to -6.0dBs
2
8
4
2
9
8
2
9
FIG.
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BIAS CURRENT
q2 r
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(A)
Adjust the AG
for the output of
the DECK to
become
1kHz(-30dBs)/
10kHz(-30dBs).
.
xia
o
iB j
y
u
Adjust the REC VR
level so that the line
out is -2.6dBs at
1kHz, and record
and playback
1kHz/10kHz alter-
nately.
1
6
3
.
VR 3 (L)
VR 4 (R)
c
o
Record 1kHz and
10kHz alternately,
and adjust the bias
current adjustment