Sharp CDXP-300-H Service manual
CD-XP300H
SERVICE MANUAL
No. S2211CDXP300H
MINI COMPONENT SYSTEM
MODEL CD-XP300H
CD-XP300H Mini Component System consisting of CD-XP300H
(main unit) and CP-XP300H (speaker system).
• In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
• Note for users in U.K.
Recording and playback of any material may require consent
which SHARP is unable to give. Please refer particularly to the
provisions of Copyright Act 1956, the Dramatic and Musical
Performers Protection Act 1956, the Performers Protection Acts
1963 and 1972 and to any subsequent statutory enactments and
orders.
CONTENTS
Page
SAFETY PRECAUTION FOR SERVICE MANUAL ........................................................................................................... 2
IMPORTANT SERVICE NOTES (FOR U.K. ONLY) .......................................................................................................... 2
SPECIFICATIONS ............................................................................................................................................................. 3
NAMES OF PARTS ........................................................................................................................................................... 4
OPERATION MANUAL ...................................................................................................................................................... 5
QUICK GUIDE (FOR U.K. ONLY)...................................................................................................................................... 8
DISASSEMBLY................................................................................................................................................................ 10
REMOVING AND REINSTALLING THE MAIN PARTS................................................................................................... 13
ADJUSTMENT ................................................................................................................................................................. 14
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 18
TYPES OF TRANSISTOR AND LED............................................................................................................................... 18
BLOCK DIAGRAM ........................................................................................................................................................... 19
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD............................................................................................. 22
VOLTAGE ........................................................................................................................................................................ 39
WAVEFORMS OF CD CIRCUIT...................................................................................................................................... 40
TROUBLESHOOTING..................................................................................................................................................... 41
FUNCTION TABLE OF IC................................................................................................................................................ 45
FL DISPLAY..................................................................................................................................................................... 51
WIRING OF PRIMARILY SUPPLY LEADS (FOR U.K. ONLY) ....................................................................................... 52
REPLACEMENT PARTS LIST/EXPLODED VIEW
PACKING METHOD (FOR U.K. ONLY)
SHARP CORPORATION
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
CD-XP300H
DISASSEMBLY
Caution on Disassembly
Follow the below-mentioned notes when disassembling
the unit and reassembling it, to keep it safe and ensure
excellent performance:
1. Take cassette tape and compact disc out of the unit.
2. Be sure to remove the power supply plug from the wall
outlet before starting to disassemble the unit.
3. Take off nylon bands or wire holders where they need to
be removed when disassembling the unit. After servicing
the unit, be sure to rearrange the leads where they were
before disassembling.
4. Take sufficient care on static electricity of integrated
circuits and other circuits when servicing.
CD-XP300H
STEP
10 Turntable 1. Hook........................ (K1) x2 11-3
11 Loading Tray 1.
12 CD Servo PWB 1. Screw ......................(M1) x2 11-5
13 CD Mechanism 1. Hook ........................ (N1) x2 11-6
Note 1: How to open the changer manually. (Fig. 10-3)
1. In this state, turn fully the lock lever in the arrow direction through
2. After that, push forward the loading tray.
REMOVAL
1 Top Cabinet 1. Screw ...................... (A1) x4 10-1
2 Side Panel 1. Screw ...................... (B1) x8 10-1
(Left/Right)
3 CD Tray Cover/ 1. Turn on the power supply,.. 10-2
CD Player Unit open the disc tray, take out
4 Rear Panel with 1. Screw ...................... (D1) x8 10-2
Fan Motor 2. Socket ..................... (D2) x1
5 Main PWB/ 1. Screw ...................... (E1) x4
RDS PWB 2. Socket ..................... (E2) x3 11-1
6 Front Panel 1. Screw .......................(F1) x2 11-1
7 Display PWB 1. Screw ....................(G1) x12 11-2
8 Tape Mechanism 1. Open the cassette holder. .. 11-2
9
Headphones PWB
(Note 2) 2. Hook........................ (M2) x1
the hole on the loading tray bottom.
the CD tray cover, and close.
(Note 1)
2. Screw ...................... (C1) x1
3. Hook........................ (C2) x3
4. Hook........................ (C3) x2
5. Socket ..................... (C4) x2
3. Flat Cable ............... (E3) x1
4. Flat Wire.................. (E4) x1
2. Hook.........................(F2) x2
3. Socket ......................(F3) x1
2. Flat Cable ...............(G2) x1
2. Screw...................... (H1) x5
1. Screw .......................(J1) x1 11-2
2. Cover ...................... (K2) x1
2.
3. Socket .....................(M3) x4
2. Hook........................ (N2) x2
PROCEDURE
Turn fully the lock lever in the
arrow direction
Push the loading tray backward
to engage the claw with the
groove and remove it in the
direction of the arrow
.
...
(L1) x6
FIGURE
10-2, 11-1
10-3
11-4
CD-XP300H
Side Panel
(Right)
(B1) x 2
ø3 x 10mm
(B1) x 4
ø3 x 10mm
(C3) x 1
Pull
CD Player
Unit
Rear
Panel
(C1) x 1
ø3 x 10mm
(D2) x 1
Main
PWB
Lock Lever
(A1) x 2
ø3 x 12mm
(C4) x 2
CD Servo
PWB
(D1) x 7
ø3 x 10mm
Top Cabinet
Rear
Panel
Figure 10-1
Figure 10-2
CD Tray Cover
1
(D1) x 1
(E1) x 1
ø3 x 10mm
ø3 x 10mm
Front
Panel
Side Panel
(Left)
(B1) x 2
ø3 x 10mm
(C3) x 1
Pull
Front
Panel
Main PWB
Lug Wire
(E1) x 1
ø3 x 10mm
(A1) x 2
ø3 x 12mm
(C2) x 3
1
2
Note 2:
1. After removing the connector for the optical pickup from the
connector, wrap the conductive aluminium foil around the front end
of the connector so as to protect the optical pickup from electrostatic damage.
Note 3:
1. Be careful not to break the claw of the CD mechanism.
2. When fining back the cam gear assembly, let it lock by front
movement.
CD Player Unit
(Bottom View)
Figure 10-3
– 10 –
(E2) x 1
(L1) x 3
3
(L1) x 3
Loading Tray
1
2
CD Player Unit
CD
Mechanism
(N2) x 2
(N1) x 1
(N1) x 1
Loading Tray
(F3) x 1
(F2) x 1
Pull
Power PWB
Transformer
PWB
(E1) x 2
ø3 x 10mm
Display PWB
(E2) x 2
(E3) x 1
Figure 11-1
Front
Panel
RDS PWB
Main PWB
(F2) x 1
Pull
(F1) x 2
ø3 x 10mm
(G2) x 1
Headphones
PWB
(E4) x 1
Front Panel
(M2) x 1
(M1) x 2
ø3 x 10mm
(M3) x 2
CD-XP300H
Figure 11-4
Loading
Tray
CD Servo
PWB
(G1) x 12
ø3 x 10mm
Mechanism Dust Cover
Tape Mechanism
(H1) x 5
ø3 x 10mm
Headphones
PWB
(J1) x 1
ø3 x 10mm
(K2) x 1
(K1) x 2
Figure 11-2
Open
(M3) x 2
Figure 11-5
Lug Wire
Cassette
Holder
Turntable
Loading
Tray
CD Player Unit
Figure 11-6
Figure 11-3
– 11 –
CD-XP300H
CP-XP300H
STEP
Screwdriver
REMOVAL
1 Woofer 1. Front Panel ............. (A1) x1 12-1
2. Screw ...................... (A2) x4 12-2
2 Tweeter 1. Screw ...................... (B1) x2 12-2
Driver should
be pried away
from Speaker Box.
PROCEDURE
(A1) x 1
Speaker Box
Figure 12-1
FIGURE
Tweeter
(B1) x 2
ø3 x 10mm
Speaker Box
Woofer
(A2) x 4
ø4 x 16mm
Figure 12-2
– 12 –
REMOVING AND REINSTALLING THE MAIN PARTS
TAPE 2
TAPE 1
Main Belt
(E1) x 1
TAPE 2
Main Belt
(D1) x 1
TAPE 1
Main Belt
(D1) x 1
Main Belt
(E1) x 1
FF/REW
Belt
(D2) x 1
FF/REW
Belt
(E2) x 1
Motor
Motor
TAPE MECHANISM SECTION
Perform steps 1 to 6 and 8 of the disassembly method to
remove the tape mechanism.
How to remove the record/playback and erase
heads (TAPE 2) (See Fig. 13-1)
1. When you remove the screws (A1) x 2 pcs., the recording/
playback head and three-dimensional head of the erasing
head can be removed.
How to remove the playback head (TAPE 1)
(See Fig. 13-2)
1. When you remove the screws (B1) x 2 pcs., the playback
head can be removed.
How to remove the pinch roller (TAPE 1/2)
(See Fig. 13-3)
1. Carefully bend the pinch roller pawl in the direction of the
arrow <A>, and remove the pinch roller (C1) x 1 pc., in the
direction of the arrow <B>.
Note:
When installing the pinch roller, pay attention to the spring
mounting position.
Erase Head
(A1) x 2
Ø2 x 9mm
Figure 13-1
TAPE 1
TAPE 2
CD-XP300H
Clutch Ass'y
Record/Playback
Head
Clutch Ass'y
Playback
Head
How to remove the belt (TAPE 2)
(See Fig. 13-4)
1. Remove the main belt (D1) x 1 pc., from the motor side.
2. Remove the FF/REW belt (D2) x 1 pc.
How to remove the belt (TAPE 1)
(See Fig. 13-4)
1. Remove the main belt (E1) x 1 pc., from the motor side.
2. Remove the FF/REW belt (E2) x 1 pc.
How to remove the motor (See Fig. 13-5)
1. Remove the screws (F1) x 2 pcs., to remove the motor.
Motor
Clutch Ass'y
(B1) x 2
Ø2 x 9mm
Pinch Roller
(C1) x 1
Figure 13-2
Pull
<B>
Figure 13-3
<A>
Pinch
Roller
Pawl
(F1) x 2
Ø 2.6 x 5mm
Figure 13-4Figure 13-5
– 13 –
CD-XP300H
CD MECHANISM SECTION
Perform steps 1, 2, 3, 10, 11,12 and 13 of the disassembly
method to remove the CD mechanism.
How to remove the loading motor
(See Fig. 14-1)
1. Bend the hooks (A1) x 6 pcs., to remove the loading motor.
How to remove the pickup (See Fig. 14-2)
1. Remove the stop washer (B1) x 1 pc., to remove the gear
(B2) x 1 pc.
2. Remove the screws (B3) x 2 pcs., to remove the shaft
(B4) x 1 pc.
3. Remove the pickup.
Note
After removing the connector for the optical pickup from the
connector wrap the conductive aluminium foil around the front
end of connector so as to protect the optical pickup from
electrostatic damage.
(B3) x 2
ø2.6 x 6mm
Loading
Tray
Figure 14-1
Stop Washer
(B1) x 1
Loading
Motor
Loading
Motor PWB
(A1) x 6
ADJUSTMENT
MECHANISM SECTION
• Driving Force Check
Torque Meter Specified Value
Play: TW-2111 Tape 1: Over 80 g
• Torque Check
Torque Meter
Play: TW-2111 30 to 80 g.cm 30 to 80 g.cm
Fast forward: TW-2231 — 70 to 180 g.cm
Rewind: TW-2231 — 70 to 180 g.cm
Tape 2: Over 80 g
Specified Value
Tape 1
Tape 2
Pickup
Shaft
(B4) x 1
Gear
CD Mechanism
(B2) x 1
Figure 14-2
• Tape Speed
Test Tape
Normal MTT-111 Variable 3,000 ± 30 Hz Speaker
speed Resistor in Terminal
Adjusting
Point
motor. (Load
Specified
Value
TAPE MECHANISM
Instrument
Connection
resistance:
6 ohms)
– 14 –
Tape
Motor
Variable Resistor in motor
Figure 14-3
CD-XP300H
T
T
EFBL
FDO
TE
Stopped
CH1=500 mV
DC 10:1
CH2=200 mV
DC 10:1
CH3=1 V
DC 10:1
500 ms/div
(500 ms/div)
NORM:20 kS/s
1
2
3
=Record Length=
Smoothing : ON CH1 : 0.000 V
CH2 : 0.000 V
Main : 100 K
Zoom : 2 k
Mode : SINGLE
Type : EDGE CH1
Delay : 0.0 ns
Hold off : 0.2 µs
CH3 : 0.00 V
CH4 : 0.00 V
BW : FULL
=Trigger==Filter= =Offset=
CH2
v/DIV
200 mV
1999/04/05 20:26:47
TUNER SECTION
fL: Low-range frequency
fH: High-range frequency
• AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
Test Stage
AM IF 450 kHz 1,620 kHz T351 *1
AM Band — 522 kHz (fL): T306 *2
Coverage 1.1 ± 0.1 V
AM Tracking 990 kHz 990 kHz (fL): T303 *1
*1. Input: Antenna Output: TP302
*2. Input: Antenna Output: TP301
Frequency Frequency
Display
T351
AM IF
TP302
L354
R357
T306
AM BAND
COVERAGE fL
R381
TP301
AM TRACKING
fL
Setting/
Adjusting
Parts
MAIN PWB
FE301
T303
Instrument
Connection
SO301
FM ANTENNA
TERMINAL
CNP301
AM LOOP
ANTENNA
CD SECTION
• Adjustment
Since this CD system incorporates the following automatic
adjustment functions, readjustment is not needed when
replacing the pickup. Therefore, different PWBs and pickups
can be combined freely.
Each time a disc is changed, these adjustments are
performed automatically. Therefore, playback of each disc
can be performed under optimum conditions.
Items adjusted automatically
(1) Offset adjustment (The offset voltage between the head
amplifier output and the VREF reference voltage is
compensated inside the IC.)
* Focus offset adjustment
* Tracking offset adjustment
(2) Tracking balance adjustment (waveform drawing
Fig.15-2 EFBL)
(3) Gain adjustment (The gain is compensated inside the IC
so that the loop gain at the gain crossover frequency will
be 0 dB.)
* Focus gain adjustment
* Tracking gain adjustment
CD ERROR CODE DESCRIPTION
Error
01
When Pickup set inner position, inner switch
cannot detect 'ON' level for 10 secs.
When tray moves to Open/Close, Open/Close switch
10*
cannot detect 'ON' level for 7 secs.
When disc table rotate to target position.
Clamp switch cannot detect 'ON' level for 7 secs.
When disc table set to Disc1 position for 1 st time,
11* "CLAMP SW", "DISC NO SW" and "OPEN/CLOSE"
cannot detect 'ON' level for 14 secs.
31
When it changes to CD function, DSP cannot read
initial data.
* 'CHECKING'
If Error is detected, 'CHECKING' will be display instead of 'ERCD**' display. 'ER-CD**' display will only be display when
error had been detected for the 5 th times.
Explanation
• FM IF
Notes:
1: Description of the "FM IF Adjustment" is not carried on this
Manual. It is because the IF coil in the FM front end section
has been best adjusted in the factory so that its further
adjustment is not needed at the field. When replacing the
FM front end assembly, no adjustment is needed either.
2: The parts in the FM front end section are prepared in a
complete unit, so you can't obtain each part individually.
Figure 15-1 ADJUSTMENT POINTS
Figure 15-2
– 15 –
CD-XP300H
TEST MODE
• Setting the test mode
Any one of test mode can be set by pressing several keys as follows.
<X-BASS> + <CD> + <POWER> TEST: CD operation test.
Function: -CD test mode.
-Enter test mode.
C D T E S T
OPEN/CLOSE operation is using manual.
<< >>, << >> buttons make pick's slide possible.
IL isn't done
<<MEMORY>>
key input.
Adjustment result
automatically will
display as below.
for each 2 sec :
a) "FOFF_XX"
b) "TOFF_XX"
c) "TBAL_XX"
d) "TGAN_XX"
f) "FGAN_XX"
g) "RFLS_XX"
explanation:
a) Focus off set = "FOFF_XX"
b) Tracking off set = "TOFF_XX"
c) Tracking balance = "TBAL_XX"
d) Tracking Gain = "TGAN_XX"
f) Focus Gain = "FGAN_XX"
g) RF level shift = "RFLS_XX"
<<PLAY>> key input.
Do TOC IL. Do normal play.
When these following key is input
into PLAY key, track number can
be appoint directly.
<< 1>> key: Track 4
<< 2>> key: Track 9
<< 3>> key: Track 15
<<STOP>> key input.
STOP
<<MEMORY>> key input.
Laser ON.
<<MEMORY>> key input.
Tracking OFF play at that
specific point.
<<MEMORY>> key input.
Tracking ON play from
that specific point.
<<MEMORY>> key input.
Adjustment result automatically will
display as below for each 2 sec :
a) "FOFF_XX"
b) "TOFF_XX"
c) "TBAL_XX"
d) "TGAN_XX"
f) "FGAN_XX"
g) "RFLS_XX"
<<STOP>> key input.
VOL — Last memory
BAL — CENTER
P.GEQ — FLAT
X-BASS — OFF
To cancel : Power OFF
– 16 –
STOP
Sliding the PICKUP with
>>, << >> button
<<
must only be in STOP mode.
Standard Specification of Stereo System Error Message Display Contents
Error Contents DISPLAY Notes
TAPE Mechanism Error. 'ER-TA**' 00: Tape Mechanism Error.
01: Initial Error.
02:
03:
CD Pickup Mechanism Error. 'ER-CD**' 01: PU-IN SW Detection NG.
02:
03:
04:
CD Changer Mechanism Error. 'ER-CD**' 10: Changer Error.
(*) 11: Initial Error.
12:
13:
CD DSP Communication Error 'ER-CD**' 31: DSP COMMUNICATION ERROR
Focus Not Match. 'NO DISC'
IL Time Over. 'NOT READ'
TUN PLL Unlock. 'ER-TU**' 00: TUN Error.
01: PLL Unlock.
02:
03:
CD-XP300H
(*) CHECKING:
If CD changer mechanism error is detected, 'CHECKING' will be display instead of 'ER-CD**' display 'ER-CD**' will only be display
when CD changer mechanism error had been detected for the 5 th times.
Speaker abnormal detection and +B PROTECTION display
In case speaker abnormal detection or +B PROTECTION had occurred, it can be check by pressing 'POWER', 'VIDEO' and 'XBASS' key twice. Display will show "S** B**". S is referring to speaker abnormal detection and B is referring to +B PROTECTION.
** is in hex valve.
+B PROTECTION is condition when irregular process occur on power supply line.
– 17 –
CD-XP300H
NOTES ON SCHEMATIC DIAGRAM
• Resistor:
To differentiate the units of resistors, such symbol as K and
M are used: the symbol K means 1000 ohm and the symbol
M means 1000 kohm and the resistor without any symbol is
ohm-type resistor. Besides, the one with “Fusible” is a fuse
type.
• Capacitor:
To indicate the unit of capacitor, a symbol P is used: this
symbol P means pico-farad and the unit of the capacitor
without such a symbol is microfarad. As to electrolytic
capacitor, the expression “capacitance/withstand voltage”
is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type
• Schematic diagram and Wiring Side of P.W.Board for this
model are subject to change for improvement without prior
notice.
• The indicated voltage in each section is the one measured
by Digital Multimeter between such a section and the chassis with no signal given.
1. In the tuner section,
indicates AM
indicates FM stereo
2. In the main section, a tape is being played back.
3. In the deck section, a tape is being played back.
( ) indicates the record state.
4. In the power section, a tape is being played back.
5. In the CD section, the CD is stopped.
• Parts marked with “ 1 ” ( ) are important for
maintaining the safety of the set. Be sure to replace these
parts with specified ones for maintaining the safety and
performance of the set.
REF. NO
SW1 OPEN/CLOSE ON—OFF
SW2 CLAMP ON—OFF
SW3 DISC NUMBER ON—OFF
SW4 PICKUP IN ON—OFF
SW701 ON/STAND-BY ON—OFF
SW702 FAST REWIND/PRESET DOWN ON—OFF
SW703 FAST FORWARD/PRESET UP ON— OFF
SW704 STOP ON—OFF
SW705 PLAY/REPEAT ON—OFF
SW711
SW712 TUNER (BAND) ON—OFF
SW713 TAPE ON—OFF
SW714 VIDEO/AUX ON—OFF
SW715 TIMER/SLEEP ON—OFF
CD
DESCRIPTION
POSITION
ON—OFF
TYPES OF TRANSISTOR AND LED
FRONT
VIEW
REF. NO DESCRIPTION POSITION
SW716 TUNING/TIME UP ON—OFF
SW717 RECORD PAUSE ON—OFF
SW718 MEMORY/SET ON—OFF
SW719 TUNING/TIME DOWN ON—OFF
SW720 CLOCK ON—OFF
SW721 VOLUME UP ON—OFF
SW722 VOLUME DOWN ON—OFF
SW723 DISC SKIP ON—OFF
SW724 OPEN/CLOSE ON—OFF
SW725 EQUALIZER/X-BASS/DEMO ON—OFF
SW727 DISPLAY MODE ON—OFF
SW728 ASPM ON—OFF
SW729 PTY TI SEARCH ON—OFF
FRONT
VIEW
FRONT
VIEW
E C B
(S) (G) (D)
(1) (2) (3)
KRC102 M
KRC104 M
KTA1266 GR
KTA1273 Y
KTA1274 Y
KTC3199 GR
KTC3203 Y
2SC1845 F
2SC380 O
B C E
SLR342VCJKTC2026
– 18 –
TO MAIN SECTION
TO DISPLAY SECTION
SW1
OPEN/
CLOSE
SW2
CLAMP
SW3
DISC
NUMBER
316452
M
+–
CD-XP300H
M3
CD LOADING
MOTOR
BI4
CNP7
XL1
33.8688 MHz
A_GND
L-CH
R-CH
354
12
61
CE
62
CLK
63
DI
64
DO
65
WRQ
66
RES
67
DRF
XOUT
48
XIN
49
5
+3.3V(+B11)
D_GND
RFVDD
ADAVDD
18
+6.5V (+B4)
D_GND (DRIVER)
+5V (+B7)
+5V (+B8)
687
4245 68 25 70
VDD5
LCHO
RCHO
IC1
LC78645NE
CD SERVO
VDD
XVDD
77
38
47
VVDD
41
LVDD
46
RVDD
ZD1
3.3V
CLAMP SW
CD RES
CL
DI
DO
CE
DRF
WRQ
54
327168910
Q3
71
CONT5
FIN1 A
CONT4
FIN2 B
987
TIN1 E
10
CONT3
TIN2 F
79
CONT2
LDS
80
LDD
SLDO
SPDO
FDO
TDO
26
75
69
57
56
55
51
50
44
43
40
37
28
19
23
22
21
20
O/C
DISC NO
CNP8
SW4
PICKUP
IN
+5V
(+B7)
316452
316452
40
VCC4
25
17
2
1
18
VCC1
VCC2
24
23
VCC3
M63001FP
FOCUS/TRACKING/
SPIN/SLED
CNS4
CNP4
IC2
DRIVER
41 39 38
42
35
~~
29
22
21
14
8
+5V
(+B7)
Q2
CONSTANT
VOLTAGE
+3.3V
(+B11)
PICKUP UNIT
LASER
DRIVER
+3.3V(+B11)
Q1
FOCUS COIL
TRACKING COIL
Figure 19 BLOCK DIAGRAM (1/3)
– 19 –
4765
M2
SLED
MOTOR
M1
SPINDLE
MOTOR
M
M
162826 27
15
–
+
+
–
CD-XP300H
MUTE
XT21
4.332 MHz
TAPE 1
PLAYBACK
HEAD
TAPE 2
RECORD/
PLAYBACK
HEAD
SO301A
FM ANTENNA
TERMINAL
AM LOOP
ANTENNA
CNP301
TRACKING
ICT21
LC72723
RDS DEORDER
8
X OUT
RST
VSSD
9
10
CD SERVO
SECTION
P.B.
AC BIAS
TEST
7
CNP7
FROM
REC.
14
13
Q101~
Q104
SWITCHING
X IN
L-CH
R-CH
L-CH
R-CH
ERASE
HEAD
FE301
FM FRONT END
3
7
3
11
1
24
2
23
6
T1/T2
REC
9
16
ALC
11
12
15
+B5
Q114
SWITCHING
1
5
P.B
T1/T2
SWITCHING
1
2
6
4
VT
AM
T303 T306
QT21
MPX IN
RDDA
15
BI601
Q105
Q106
BIAS OSC
AM BAND
COVERAGE
+B6
2
VDDA
VDDD
RDCL
RD-ID/
READY
16
R
1
2
L
3
4
+B7
5
+B8
6
7
+B4
8
L(T1)
R(T1)
L(T2)
R(T2)
POP
REDUCE
L REC
R REC
SWITCHING
+B5
Q112
Q111
L103
SWITCHING
CF301
IC302
LC72131
(TUNER)
VCC
SWITCHING
13
L
4
21
R
H/N
L
7
18
R
10
ALC
19
Q113
Q109
FM IF
AMP.
Q301
CF302
AM OSC OUT
+B6
T351
AM IF
21
AM MIX
21
AM OSC IN
AM RF IN
450 kHz
CF352
7
STEREO
FM MPX./AM IF
X352
4.5 MHZ
20 22 11
PLL
PB
REC
+B5
AOUT
+B5
FM
Q360
VIDEO/AUX IN
TUNER
X IN
JK690
L
R
X OUT
7
AUX
TAPE
CD
1615
MO/ST
FM/AM
10
9
9
L
R
16
10
L
R
15
11
L
R
14
12
PROCESSOR
L
R
13
IC101
AN7345K
PLAYBACK AND RECORD
/PLAYBACK AMP.
MOTOR
DRIVER
+B5
Q110
BIAS
+B3
+B3
Q706
Q707
Q708
SOLENOID
DRIVER
+B6
10.7 MHz
CF351
+B6
4
985
FM
GND
AM IF
L354
FM+B
MPX IN
162324
FM/AM
OUT
18
LOW PASS LOW
IC303
LA1832S
FM IF DET.
CLK
DO
DI
CE
5413
6
17
21
23
IC601
LC75341
AUDIO
7
81817
3
Q107
Q108
MUTING
ZD351
5.1V
X351
456 kHz
13
17
DET
VCO
14
MO/ST
PHASE
15
(FM/AM)
12
+B5
+B5
1
DI
2
CE
24
CLK
MECHANISM
21
4
TAPE
ASS'Y
R
L
–20dB
ATT
L
R
+B5
Q601
Q602
REC/PLAY
Q603
Q604
T1/T2
BIAS
SYSTEM
Figure 20 BLOCK DIAGRAM (2/3)
– 20 –
+B5
51
Q705
~
12
+B9
FL701
FL DISPLAY
13
27
14
19
~
CD-XP300H
~
32
41
33
~
+B10
45
+B10
TO CD
SECTION
TAPE
MECHANISM
ASS'Y
0dB
T
Q601
Q602
REC/PLAY
Q603
Q604
MUTE
SYSTEM
SP DET.
IC901
STK41221
POWER AMP.
18
L
14
R
7
1
5
2
6
+B1
-B1
~
70
~
78
79
VLOAD
80
~
85
86
~
91
92
93
-
100
+B10
11
8
MICROCOMPUTER
VDD
12456 78
L-OUT
R-OUT
543859 62
5245 51
48
IC701
IX0524AW
SYSTEM
RESET
1 0 16 1 7 20 21222324
1112
9
XL700
4.194304 MHz
RESET
Q709
Q901~
Q904
D801
46
VDD
VDD
+B10
+B10
SP RELAY
ON-OFF
505549
–
Q905
40 25 13
AVDD
CLK
CEDIDO
FAN MOTOR
DRIVER
RL914
MAIN POWER
TRANSFORMER
39
34
33
~
31
37
26
15
41
+B10
PT801
RX701
REMOTE
1
SENSOR
2
KEY
SW701~SW705
SW711~SW725
SW727~SW729
TO CD
SERVO
SECTION
Q906
+B3
HEADPHONES
3
+B10
+B7
M4
M
FAN
MOTOR
SO901
SPEAKER
TERMINAL
JK701
T1/T2
BIAS
VF1
–VF
VF2
+B3
+B4
+B5
+B7
+B8
+B9
+B10
-B2
+B2
M_+13V
LD+7V
IC855
A+10V
D_5V
A_5V
SW_5V
UNSW_5.6V
KIA7812AP
VOLTAGE
REGULATOR
IC852
KIA7810AP
IC853
KIA7805AP
IC854
IC851
IC851~IC854
VOLTAGE REGULATOR
Figure 21 BLOCK DIAGRAM (3/3)
D802
AN78L05
– 21 –
F801
T4A L 125V
F802
T4A L 125V
T2A L 250V
D803, D804
F804
T2A L 250V
VOLTAGE
REGULATOR
Q801
D842~
D845
F803
T.F.
PT841
SUB POWER
TRANSFORMER
F805
T2.5A L 250V
RL841
L841
LINE
FILTER
AC POWER
SUPPLY CORD
AC 230 V, 50 Hz
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