(1) Turn the power ON and then push the open/close
key to open the tray.
(2) After removed the tray cover, push the open/close
key to close the tray and then turn the power
OFF.
(3) Remove the push rivet (
(4) The front panel can be separated by removing the
3 screws (4) located at the bottom plate of the
front panel.
2. How to remove the CD mechanism
(1) Remove 4 screws (5) on the left side/right side of
chassis.
(2) Remove 2 screws (6) and the cap (7) on the
rear panel.
(3) Disengage the CD mechanism as FIG.2.
1) and 4 screws (2, 3).
3. How to open the tray if not comes out.
(1) From the rear side of the CD mechanism, use a
screw driver or the like to turn the friction arm fully
counterclockwise.
(2) Pull out the tray front wards by hand when the
tray comes just out.
* As for details of items in the below, refer to RXD-F3
service manual (B51-5091-00).
(1) How to detach the tray.
(2) How to attach the tray.
(3) Replacing the pickup.
4
-490X
-489X
X05-471X
(X09)
-551 M,X
-571 M
RXD-501 X
A,B
X04-1313-80
Q TYPE ONLY
RXD-501/701
(X32)
(X14)
(X14)
T25-0050
(CDM-27)
MECHA.
(X28)
TRDR
OUT
NC
DECK
K12
LD ON
SRDR
MDP
FFDR
FRDR
DOLBY ON/OFF
DOLBY R/P
A,B PLAY
R.REC
F.REC
A,B PACK
A/B
AUDIO OUT
OFF
ON
RF
SFDR
TFDR
SSTP
L,R
LED A,B
SOL-
MOTOR-
MOTOR B
MOTOR A
P.H A,B
VR5,6
DPSS
PS LOAD
PS IN
IC CLK
RM:ON/OFF
BIAS:ON/OFF
B:120/70
A:120/70
BIAS SW
580mV
0dBS
PB OUT
REC IN
PASS
DCL
REC
PB
REC OUT
70u
120u
B
A
AUX OUT
IN
CD
DECK
K2
K1
+-~
~
+-~
~
TUNER
AUX
FAN
FROM
OTHER CH
HEAD
FAN DRIVER
Q21-23
SUB
ONLY
RXD-701 SERIES
(M,T,X,E,Q, TYPE)
RXD-701
RXD-501(M,X TYPE)
S.P OUTPUT
17.3V/6Ω
SERIES
RXD-A5/RXD-5XX
SERIES
RXD-A8/RXD-7XX
20.49V/6Ω
24.49V/6Ω
RXD-501
SERIES ONLY
1.8V/3.3KΩ
J2
J2
+B+
L
-
+
R
WOOFER
SP.
RELAY
+B
K11
FRONT S.P
+B
H.P RELAY
MUTE
POWER
AMP
K13
VR1
AUX LEVEL
IC19
X09,IC9
SPEANA
IC2
X1
ST SW, PS SW
LD/UNLD SW, UP/DOWN SW
RMR/BRKM/RMF/LMF/LMR
X09,IC10
M38199MF-075FP
MAIN u-COM
+5V
+5V
TC74HC166AP
POLAR
UNIT
MUTE
Q3,4
Q10,11
IC1 HA12209F
MS
AMP
REC
IC3
IC1
FL DRIVER
u-COM
A1ED1
SENSOR
REMOTE
FL DISPLAY
IC21
OTHER CH
SURROUND
J4
WOOFER
SUB
PHONES
SURROUND
SP.
+
+
-
-
R
L
SP.
FRONT
R
L
+
-
-
+
IC4
SURROUND
SRS
VOL.
ELECTRIC
ZERO MUTE
16.9344MHz
DRIVER MUTE
IC2
CXD2587Q
DSP/DAC
IC1
RF AMP/SERVO
CXA1571M
BA5979S
IC4,5 MOTOR
DRIVER
TA8409S
L.M
DRIVER
LOADING
ROTARY
DRIVER
R.M
TRAVERSE UNIT
D40-1500
START
LIMIT SW
FOCUS
TRACKING
IC3
4ch BTL DRIVER
D.M
DRIVER
DISC MOTOR
DRIVER
FEED MOTOR
F.M
COIL
DRIVER
TRACKING COIL
COIL
FOCUS COIL
DRIVER
LD
SW
Q1
LD
F
E
C
B
A
IC5
BA10393
Q3,4
Q1,2
A PB
B R/P
IC6
EXPANDER IC
+5V
OUT
L1
MPX
L.P.F.
CHANNEL
OTHER
DOLBY
Q5
CONTROL
BIAS
VR3,4
BIAS TRAP
IC4
BA3126N
B
PB
LEVEL
VR1,2
IC3
B PB AMP
BEAT CANCEL
Q7,8
LEVEL
VR7,8
A
PB
IC2
A PB AMP
22.2dBS
60mV
OSC
BIAS
B ERASE
AUX OUT
AUX OUT
0.5V/3.3kΩ
AUX IN
AUX IN
400mV/47kΩ
MIC1,2
2.5mV/2.2kΩ
MIC
INPUT
SEL.
IC1
AM:180mV/3.3kΩ
FM:600mV/3.3kΩ
TUNER OUTPUT
BLOCK
TUNER
AC
~
D24
D26
SW
SURROUND
MATRIX
RELAY
S.W. SPEAKER
RELAY
FRONT S.P
TUNER
(IC2)
DSP
DRIVER
(IC4.5)
MOTOR
H.P RELAY
TUNER
ANALOG
MECHA.
DECK
Q19
IC13
AVR
+5V
+9V
BIAS
AVR
FL DRIVER
u-COM
MIAN u-COM
SUB u-COM
IC21
IC
IC15
AVR
POWER
+12V
IC12
AVR
-12V
Q14
AVR
-30V
Q15
AVR
+5.6V
IC21
POWER
IC
D23
D22
D24
D26
D18
D17
VR1
MIXING
IC101
(2/2)
MIC AMP
IC101
(1/2)
BLOCK DIAGRAM
RXD-501/551/571/A5/701/751/771/A8
5
RXD-501/551/571/A5/701/751/771/A8
CIRCUIT DESCRIPTION
1. Initialization
1-1 Setting of initial conditions
While pressing the [ENTER] key, plug the AC cord into
the AC power outlet.
1-2 Initializing operation
• A microcomputer is initialized for start when the AC
power is turned on while pressing the [ENTER] key. At
that time, CD mechanism and
nism are also initialized.
• During the initial operation, the display shows “INITIAL-
IZE” and after that the clock blinks up on display.
CASSETTE mecha-
1-3 Initial items and back up data
ITEMS
✣ POWEROFF
✣ VOLUME45
✣ BALANCECENTER
MUTINGOFF
EQOFF (ROCK)
✣ EQ. MANUFLAT
AMPEX. BASSON
✣ SRS 3DOFF
✣ S.W.LEVEL 3 (RXD-
701/751 ONLY)
✣ INPUT SELTUNER
✣ 3D LEVELLEVEL +5
✣ DEMOON
✣ BANDFM
✣ LAST fLOWEST
While pressing the [INPUT] key or [Band] key, plug the
AC power cord into AC outlet.
3-1-2 Canceling of the test mode
Unplug the AC power cord.
3-1-3 Condition in test mode
POWER • • • • • • ON
SELECTOR • • • AUX (in case of [INPUT] key)
TUNER (in case of [BAND] key)
FL, LED • • • • • All the fluorescent display indicators
and LEDs light. (The all illuminated
state is cleared by pressing any main
unit key or remocon key.
EX. BASS • • • • • OFF
S.W. • • • • • • • • • OFF
3-1-4 Basic operation in test mode.
(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) MODE / DEMO key
When this key is pressed in the test mode, all the fluorescent light off and normal display are indicated
cyclically.
(2) DISC 1~3 keys
With the selector on AUX, when the DISC 1~3 keys
are operated, the 3D level settings can be made as
follows.
1 DISC 1 • • • • 3D ON level -8 (Min)
2 DISC 2 • • • • 3D ON level 0 (Center)
3 DISC 3 • • • • 3D ON level +8 (Max)
(3) DISC SKIP key (S level display)
With the selector on TUNER, the fluorescent changes
cyclically as follows by pressing the [DISC SKIP] key.
1 ATT is switched OFF. “ATT OFF XX”
2 ATT is switched ON. “ATT ON XX”
3 ATT is switched OFF. Normal display
XX means A/D value (HEX) of S.
(4) CD STOP key
With the selector on TUNER, when the [CD STOP]
key operated, the preset memory can be changed as
10 steps.
î10
ì ì
î20
ì ì
î30
ì ì
î40
ì ì
î00 (
ì ì
(5) AUTO, TUNING UP/DOWN
With the selector on something other than TUNER,
the E.Q (Flat, Min, Max) settings can be made by
pressing the [AUTO] key and the tuning [UP] [DOWN]
keys.
[AUTO] key E.Q Flat
TUNING [DOWN] keyE.Q Min
TUNING [UP] key E.Q Max
)
7
RXD-501/551/571/A5/701/751/771/A8
CD MECH
CDM-27
X14, IC1
FL DRIVER uCOM
uPD780204
X09, IC10
X09, IC11
RDS IC
SAA6579
X09, IC1
SELECTOR IC
NJU7313AL
X09, IC4
SYSTEM IC
M62430FP
X09, IC9
SPEANA IC
BA3834SK
X05, IC2
PLL IC
LC72131
M38199MF-075FP
u-COM
X32, IC2
DSP
CXD2587Q
X28, IC6
EXPANDER IC
TC74HC166AP
DECK MECH
CIRCUIT DESCRIPTION
(6) CD SKIP UP/DOWN keys
With the selector on TUNER, the P. CALL is operated
by pressing the skip UP/DOWN keys.
SKIP [UP] key P.CALL up
SKIP [DOWN] key P. CALL down
4. Main microprocessor
4-1 Microprocessor periphery block diagram
(7) CD OPEN/CLOSE keys
With the selector on TUNER, the channel space settings can be mad cyclically by pressing the
OPEN/CLOSE keys with M version.
(8) REC/ARM
Whenever the REC/ARM key is pressed, the indication of S.W. (ON/OFF) is available.
8
RXD-501/551/571/A5/701/751/771/A8
CIRCUIT DESCRIPTION
4-2 Pin description
Microprocessor : M38199MF-075FP (X09, IC10)
NoNameI/ODescription
1PS INIParallel serial IC input data
2PS LOADOParallel serial IC loadH : SHIFTL : LOAD
3A MUTEOAudio mute controlH : OFFL : ON
4BP INISpeana input (A/D converter input)
5JOG CWIJog input B
6JOG CCWIJog input A
7ENC CWIRotary encoder input B
8ENC CCWIRotary encoder input A
9H.P.IHeadphones switch inputH : ONL : OFF
10NCI/ONo used
11CD RSTOCD DSP IC reset control (CXD2587Q)H : NORMALL : RESET
12DRV CLKOFL driver u-COM control clock
13DRV SIOFL driver u-COM control data output
14DRV SOIFL driver u-COM control data input
15S LEVELIRDS S Level input
16RDS DATAIRDS data input
17,18 NCINo used
19CD CKOCD DSP IC clock (CXD2587Q)
20SQCKOCD Sub code clock (CXD2587Q)
21CDDTOCD DSP IC data (CXD2587Q)
22SQSOICD Sub code input (CXD2587Q)
23CDXLOCD latch output (CXD2587Q)
24SENSICD sense input (CXD2587Q)
25CDSCKOSense data reading clock output (CXD2587Q)
26LD ONOCD laser outputH : OFFL : ON
27DATAOSELECTOR/SYSTEM/DAC/DOLBY IC data output
28CLKOSELECTOR/SYSTEM/DAC/DOLBY IC clock output
29PROTIProtection inputH : PROTECTION ON L : NORMAL
30SCORISub code synchronism signal (CXD2587Q)
31E DATAOE. vol data output (M62430FP)
32E CLKOE. vol clock output (M62430FP)
33NCI/ONo used
34RDS CLKIRDS clock input
35RESETIReset signal inputH : NORMAL L : RESET
36X CINITimer clock input (32.768kHz)
37X COUTOTimer clock output (32.768kHz)
38X INIMain clock input (8.38MHz)
39X OUTOMain clock output (8.38MHz)
40VSS–GND
41PLL DOIPLL data input
42STEREOIStereo detector input
43SDISD detector input
44CEIPower failure inputH : AC ONL : AC OFF
45PLL CEOPLL IC chip enable (LC72131)
46TU EMPOFM emphasis change-over (M type only)H : 100kHzL : 50kHz
Polar/Pilot change-over (Q type only) H : POLARL : PILOT
47FL RSTOFL driver reset control output
9
RXD-501/551/571/A5/701/751/771/A8
CIRCUIT DESCRIPTION
NoNameI/ODescription
48T MUTEOTUNER mute control output
49DRV STOFL driver u-COM control strobe output
50HP RLYOHeadphones relay control
51SEL STOSelector IC strobe output (NJU7313AL)
52ATTOE. vol attenuationH : ONL : OFF
53SYS STOSystem IC strobe output (M62430FP)
54CS RELAYOCS speaker relay controlH : ONL : OFF
55SP RELAYOSpeaker relay controlH : ONL : OFF
56DOL STODolby IC strobe output
57MONOPMON controlH : ONL : OFF
58~61NCONo used
62P RLYOPower relay controlH : ONL : OFF
63LMROLoading motor control (reverse)
64LMFOLoading motor control (forward)H : ONL : OFF
65RMFORotary motor control (forward)H : ONL : OFF
66BRKMORotary motor control (brake)H : NORMALL : BRAKE
67RMRORotary motor control (reverse)H : ONL : OFF
68DC OFFOCD DSP IC power control (CXD2587Q)H : ONL : OFF
69BEAT CANCELOBeat cancelH : ONL : OFF
70A/BOA/B Playback change-overH : BL : A
71BIASOBias change-overH : ONL : OFF
72R MUTEODeck rec mute controlH : OFFL : ON
73NRODolby noise reduction change-overH : ONL : OFF
74D-R/PODolby rec/play change-overH : RECL : PLAY
75R/PORec/play change-overH : RECL : PLAY
76B CPMOB deck motor controlH : ONL : OFF
77B SOLOB deck solenoid controlH : ONL : OFF
78A CPMOA deck motor controlH : ONL : OFF
79A SOLOA deck solenoid controlH : ONL : OFF
80SPE3OSpeana out 3
81TU/SPE2OTUNER destination (scan)/speana out 2
82TYP/SPE1OModel discrimination (scan)/speana out1
83~86RET4~RET1I
87A-PHIA deck photo sensor input
88B-PHIB deck photo sensor input
89UNL SWICD unload switchH : ONL : OFF
90LO SWICD load switchH : OFFL : ON
91VCC–u-COM power supply (+5V)
92ST SWICD mechanism stop switchH : OFFL : ON
93UP SWICD mechanism up switchH : OFFL : ON
94DN SWICD mechanism down switchH : OFFL : ON
95PS SWICD mechanism position switchH : OFFL : ON
96CD MUTOCD analog muteH : OFFL : ON
97ZEROICD zero mute detectionH : MUTE OFFL : MUTE ON
98VEE–GND
99AVSS–A/D GND
100VREF–A/D reference voltage
Model discrimination input 4~1
Discrimination of TUNER destination (DSW3~DSW0)
1VDD–u-COM power supply (+5V)
2LED DISC1ODisc LED 1~3 control
3, 4NC–No used
5~9LED A~EOCD running indicator control (D33~D37)
10RESETISystem reset
11X2–Main system clock (5MHz)
12X1IMain system clock (5MHz)
13VSS–GND
14NC–No used
15NC–GND
16VDD–u-COM power supply (+5V)
17DRIVER CLKISerial clock
18DRIVER SOUTOSerial data output
19SINISerial data input
20,21NC–No used
22LED SRSOLED control terminal (SRS)
23LED 3 STEREO–No used
24LED PROLOGIC–No used
25AVSS–GND
26A/D7–GND
27~33A/D6~A/D0IKey return signal (6~0)
34AVDD–A/D power supply
35AVREF–A/D reference voltage
36,37NC–GND
38REM INIRemocon signal input
39DRIVER STIStrobe signal input
40VSS–GND
41LED EQOLED control terminal (SOUND)
42~44ECHO 3~1–No used
45ECHO MUTE–No used
46VDD–u-COM power supply (+5V)
47NC–No used
48~63SEG16~SEG1OFL segment control (SEG16~SEG1)
64~70SEG17~SEG23OFL segment control (SEG17~SEG23)
71~78SEG24~SEG31OFL segment control (SEG24~SEG31)
79VLOAD–Vload (-30V)
80~88SEG32~SEG40OFL segment control (SEG32~SEG40)
While pressing the PLAY key(DECK), plug the AC
power cord into an AC power outlet.
(2) Resetting
• Disconnect the AC power cord from an AC power outlet or press the [ON/STANDBY] key.
(3) Operation in TEST mode
(a) Initial condition
ItemCondition
PowerON
SelectorTAPE
Main VOL.-45dB(VOL45)
EX. bassOFF
FL, LED, LCDAll the FLs are turned
on for 10 seconds
¶ 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.
(b) 4-sec REC
If the REC key is pushed, the system record for 4sec.
Then, it rewinds to the REC starting position and
plays back automatically.
If the REC key is pushed during the 4-sec REC operation, the system records further for 4-sec, then
returns to the starting position of the first 4-sec REC
operation and plays back.
(c) Mechanism SW detection
SWDisplay
B FWD REC Inhibit SWCD Calendar (1)
B RVS REC Inhibit SWCD Calendar (2)
A Pack SWCD Calendar (3)
B Pack SWCD Calendar (4)
(d) Indication of A/B deck
A/B keyDisplay
A deckECHO
B deckSLEEP
15
RXD-501/551/571/A5/701/751/771/A8
{
(A)(B)
X28, CN6
L IN
L OUT
R OUT
R IN
GND
1
5
AC voltmeterAG
Oscilloscope
AC voltmeter
Frequency counter
ADJUSTMENT
5. Cassette Deck adjustment
No
Unless otherwise specified, set the respective switches as follows:0dBs=0.775V
TAPE : NORMAL DOLBY : OFF PLAY OUT : Lch (X28,CN6 1pin), Rch (X28,CN6 4pin)
ø. Cassette mechanism unit (Adjustment of the REC / PLAY head)
< 1 >
< 2 >
¿. PC BOARD ADJUSTMENT
ITEM
Demagnetization
and cleaning
Azimuth of the
REC/PLAY head
INPUT
SETTING
–
TCC−153
MTT−114
10kHz, − 10dB
OUTPUT
SETTING
–
(B)
DECK
SETTING
Power : OFF
Demagnetiza-
tion,cleaning,
PLAY
PLAY
ALIGNMENT
POINT
Recording
head, erase
head,capstan
pinch roller
FWD RVS
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.
FIG.
< 1 >
¡. PC BOARD ADJUSTMENT
< 1 >
< 2 >
TAPE
SPEED(NORMAL)
PLAYBACK
LEVEL
Adjust the AG
for the output of
BIAS CURRENT
become 400Hz
(-20dB)/12.5kHz
TCC−110
MTT−111
SCC−1727
3kHz
MTT− 150
400Hz
(A)
the DECK to
(-20dB)
(B)
(B)
(B)
PLAY
PLAY
REC
↕
PLAY
A DECK
VR 5
B DECK
VR 6
A DECK
VR 7 (L)
VR 8 (R)
B DECK
VR 1 (L)
VR 2 (R)
VR 3 (L)
VR 4 (R)
Adjust the tape
speed so that 3kHz
is obtained at the
center of the tape.
Adjust the playback
output to -2.5dBs
Record 400Hz and
12.5kHz alternately,
and adjust the bias
current adjustment