Sony XR-CA440H User manual

SERVICE MANUAL
Cassette Player section
Tape track 4-track 2-channel stereo
Wow and flutter 0.08 % (WRMS)
Frequency response 30 – 18,000 Hz
Signal-to-noise ratio
Tuner section
FM
Tuning range FM tuning interval:
50 kHz/200 kHz switchable
87.5 – 108.0 MHz
(at 50 kHz step)
87.5 – 107.9 MHz
(at 200 kHz step)
Aerial terminal External aerial connector
Intermediate frequency 10.7 MHz
Usable sensitivity 11 dBf
Selectivity 75 dB at 400 kHz
Signal-to-noise ratio 65 dB (stereo),
68 dB (mono)
Harmonic distortion at 1 kHz
0.7 % (stereo),
0.5 % (mono)
Separation 33 dB at 1 kHz
Frequency response 30 – 15,000 Hz
MW
Tuning range MW tuning interval:
9 kHz/10 kHz switchable
531 – 1,602 kHz
(at 9 kHz step)
530 – 1,710 kHz
(at 10 kHz step)
Sensitivity 30 µV
SW
Tuning range SW tuning interval:
SW1: 2,940 – 7,735 kHz
SW2: 9,500 – 18,135 kHz
(except for 10,140 – 11,575
kHz)
Aerial terminal External aerial connector
Intermediate frequency 10.7 MHz/450 kHz
Sensitivity 40 µV
Power amplifier section
Outputs Speaker outputs
(sure seal connectors)
Speaker impedance 4 – 8 ohms
Maximum power output 50 W ×4 (at 4 ohms)
General
Outputs Audio outputs
Power aerial relay control
lead
Power amplifier control lead
Inputs BUS control input terminal
BUS audio input terminal
Aerial input terminal
Tone controls Bass ±9 dB at 100 Hz
Treble ±9 dB at 10 kHz
Power requirements 12 V DC car battery
(negative earth)
Dimensions Approx. 178 ×50 ×178
mm (w/h/d)
Mounting dimensions Approx. 182 ×53 ×161
mm (w/h/d)
Mass Approx. 1.2 kg
Supplied accessories Parts for installation and
connections (1 set)
Front panel case (1)
Note
This unit cannot be connected to a digital preamplifier
or an equalizer.
Design and specifications are subject to change
without notice.
Cassette type
TYPE II, IV 61 dB
TYPE I 58 dB
FM/MW/SW CASSETTE CAR STEREO
E Model
SPECIFICATIONS
XR-CA440H
Ver 1.0 2002.10
9-874-206-01 Sony Corporation
2002J0500-1 e Vehicle Company
C2002.10 Published by Sony Engineering Corporation
Model Name Using Similar Mechanism XR-CA440X
Tape Transport Mechanism Type MG-25F-136

2
XR-CA440H
TABLE OF CONTENTS
1. GENERAL
Location of Controls ....................................................... 3
Setting the Clock ............................................................. 3
2. DISASSEMBLY
2-1. Disassembly Flow ........................................................... 4
2-2. Collar ............................................................................... 4
2-3. Cover ............................................................................... 5
2-4. Mechanism Deck (MG-25F-136) ................................... 5
2-5. MAIN Board ................................................................... 6
2-6. Heat Sink ......................................................................... 6
3. ASSEMBLY OF MECHANISM DECK
3-1. Assembly Flow................................................................ 7
3-2. Housing ........................................................................... 8
3-3. Arm (Suction) ................................................................. 8
3-4. Lever (LDG-A)/(LDG-B) ............................................... 9
3-5. Gear (LDG-FT) ............................................................... 9
3-6. Guide (C)......................................................................... 10
3-7. Mounting Position of Capstan/Reel Motor (M901) ....... 10
4. MECHANICAL ADJUSTMENTS....................... 11
5. ELECTRICAL ADJUSTMENTS
Tape Deck Section .......................................................... 11
Tuner Section .................................................................. 11
6. DIAGRAMS
6-1. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 13
6-2. Printed Wiring Board – MAIN Board – ......................... 14
6-3. Schematic Diagram – MAIN Board (1/3) – ................... 15
6-4. Schematic Diagram – MAIN Board (2/3) – ................... 16
6-5. Schematic Diagram – MAIN Board (3/3) – ................... 17
6-6. Printed Wiring Board – KEY Board –............................ 18
6-7. Schematic Diagram – KEY Board – .............................. 19
6-8. IC Pin Function Description ........................................... 21
7. EXPLODED VIEWS
7-1. Chassis Section ............................................................... 24
7-2. Front Panel Section ......................................................... 25
7-3. MAIN Board Section ...................................................... 26
7-4. Mechanism Deck Section (MG-25F-136) ...................... 27
8. ELECTRICAL PARTS LIST ............................... 28
Notes on chip component replacement
•Never reuse a disconnected chip component.
•Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
Flexible Circuit Board Repairing
•Keep the temperature of the soldering iron around 270 ˚C dur-
ing repairing.
•Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
•Be careful not to apply force on the conductor when soldering
or unsoldering.

3
XR-CA440H
SECTION 1
GENERAL This section is extracted from
instruction manual.
Location of controls
Refer to the pages listed for details.
aSOURCE (Power on/Tape/Radio/CD/
MD) select button
bMODE (o) button
Selecting the source.
cVOL +/– button
dATT (attenuate) button
eDisplay window
fZ(eject) button 8
gSEEK/AMS button
Tape:
Fast-forwarding, reversing a tape
Radio:
Tuning in stations automatically.
Finding a station manually.
CD (MP3 files)/MD:
Skipping tracks.
hMBP (My Best sound Position) button
12
iD-BASS button 12
jRELEASE (front panel release) button
kSEL (select) button
Selecting items.
lRESET button (located on the front side of
the unit, behind the front panel) 6
mSENS button
Storing the stations with the strongest
signals.
nNumber buttons
Tape:
(3): REP (Repeat)
(5): BL SKIP (Blank Skip)
(6): ATA (Automatic Tuner Activation)
Radio:
Storing the desired station on each number
button.
CD (MP3 files)/MD:
(1): DISC –
(2): DISC +
(3): REP (Repeat)
(4): SHUF (Shuffle)
MP3 files:
(5): ALBM –
(6): ALBM +
oFrequency select switch (located on
the bottom of the unit)
See “Frequency select switch” in the
Installation/Connections manual.
pBTM/MTL (Best Tuning Memory/Metal)
button 9
qDSPL (display mode change) button
rOFF (Stop/Power off) button*
*Warning when installing in a car without
an ACC (accessory) position on the
ignition switch
After turning off the ignition, be sure to press
(OFF) on the unit for 2 seconds to turn off
the clock display.
Otherwise, the clock display does not turn off
and this causes battery drain.
SOURCE
ATT
VOL
SENS
DISC REP
SHUF BL SKIP/ ALBM
-
+
/ATA
MTL
—+
MODE
SEL
RELEASE
123456
D-BASS
SEEK
AMS
BTM
MBP
OFFDSPL
Setting the clock
The clock uses a 12-hour digital indication.
Example: To set the clock to 10:08
1 Press (DSPL) for 2 seconds.
The hour indication flashes.
1Press either side of (VOL) to set the
hour.
2Press (SEL).
The minute indication flashes.
3Press either side of (VOL) to set the
minute.
2 Press (DSPL).
The clock starts.
After the clock setting is completed, the
display returns to normal play mode.
VOL
to go forward
to go back
VOL
to go forward
to go back

XR-CA440H
4
SECTION 2
DISASSEMBLY
SET
2-4. MECHANISM DECK (MG-25F-136)
(Page 5)
2-2. COLLAR
(Page 4)
2-3. COVER
(Page 5)
FRONT PANEL SECTION
(Note 3)
Note 1: The process described in can be performed in any order.
Note 2: Without completing the process described in , the next process can not be performed.
Note 3: Illustration of disassembly is omitted.
2-5. MAIN BOARD
(Page 6)
2-6. HEAT SINK
(Page 6)
• This set can be disassembled in the order shown below.
2-1. DISASSEMBLY FLOW
Note: Follow the disassembly procedure in the numerical order given.
2-2. COLLAR
2
A
B
3 Remove the bracket
in the direction of arrow A .
4 Remove the bracket
in the direction of arrow B .
5 collar
1 screw
(K5 × 8)
1 screw
(K5 × 8)

XR-CA440H
5
1 screw
(PTT2.6 × 5)
2 cove
r
2-3. COVER
2-4. MECHANISM DECK (MG-25F-136)
2 sub panel assy
1 screw (PTT2.6 × 6)
5 screw (PTT2.6 × 6
)
3 flexible board
(CN301)
4 connector (CN351)
6 mechanism deck
(MG-25F-136)
1 four screws
(PTT2.6 × 6)

XR-CA440H
6
2-6. HEAT SINK
1 seven screws
(PTT2.6
× 10
)
2 heat sink
2-5. MAIN BOARD
2 two ground point
screws
3 rubber cap (25)
4 main board
1 two screws
(PTT2.6 × 10
)
1 screw (PTT2.6 × 10)

XR-CA440H
7
SECTION 3
ASSEMBLY OF MECHANISM DECK
3-2. HOUSING
(Page 8)
3-3. ARM (SUCTION)
(Page 8)
3-4. LEVER (LDG-A)/(LDG-B)
(Page 9)
3-5. GEAR (LDG-FT)
(Page 9)
3-6. GUIDE (C)
(Page 10)
3-7. MOUNTING POSITION
OF CAPSTAN/REEL MOTOR (M901)
(Page 10)
• This set can be assembled in the order shown below.
3-1. ASSEMBLY FLOW

XR-CA440H
8
3-2. HOUSING
3-3. ARM (SUCTION)
Note: Follow the assembly procedure in the numerical order given.
Apart
Cpart
Bpart
Dpart
8Hold the hanger by
bending the claw.
6Fit projection on Dpart.
4Fit claw on Bpart.
3Put the housing
under Apart.
5Fit projection on Cpart. 1Install the catch to the hanger.
2Install the hanger onto
two claws of the housing.
7Hold the hanger by bending the claw.
hanger
housing
2Move the arm (suction) in the arrow
direction and fit on projection.
1Fit the arm (suction) on the shaft.
projection

XR-CA440H
9
3-4. LEVER (LDG-A) / (LDG-B)
3-5. GEAR (LDG-FT)
shaft A
shaft B
shaft C
1Fit the lever (LDG-A) on
shafts A– Cand install it.
shaft A
shaft B
2Fit the lever (LDG-B) on
shafts Aand Band
install it.
3type-E stop ring 2.0
gear (LDG-D)
5gear (LDG-FT)
6polyethylene washer
2tension spring (LD-2)
2tension spring (LD-1)
gear (LDG-FB)
lever (LDG-A)
hole
hole
4Align hole in the gear (LDG-D)
with hole the lever (LDG-A).
3Move the lever (LDG-B
)
in the arrow direction.
1

XR-CA440H
10
3-6. GUIDE (C)
3-7. MOUNTING POSITION OF CAPSTAN/REEL MOTOR (M901)
2guide (C)
1three claws
two precision screw
s
(P2 × 2)
Note: Mount the motor so that the
angle between of the
motor and the hole for the
screw becomes 30
° as
shown in this figure.
capstan/reel motor
(M901)
30˚

11
XR-CA440H
Procedure:
1. Put the set into the FWD PB mode.
2. Adjust adjustment resistor for inside capstan motor so that the
reading on the frequency counter becomes 3,000 Hz.
Specified Value: Constant speed
Adjustment Location:
Tape Speed Adjustment
– SET UPPER VIEW –
SECTION 4
MECHANICAL ADJUSTMENTS
TAPE TENSION MEASUREMENT
1. Clean the following parts with a denatured-alcohol-moistened
swab:
playback head pinch roller
rubber belt capstan
idler
2. Demagnetize the playback head with a head demagnetizer.
3. Do not use a magnetized screwdriver for the adjustments.
4. The adjustments should be performed with the power supply
voltage (14.4 V) unless otherwise noted.
TORQUE MEASUREMENT
Mode Torque Meter Meter Reading
2.95 – 6.37 mN•m
Forward CQ-102C (30 – 65 g•cm)
(0.42 – 0.90 oz•inch)
Forward 0.05 – 0.44 mN•m
CQ-102C (0.5 – 4.5g•cm)
Back Tension (0.01 – 0.06 oz•inch)
2.95 – 6.37 mN•m
Reverse CQ-102RC (30 – 65 g•cm)
(0.42 – 0.90 oz•inch)
Reverse 0.05 – 0.44 mN•m
CQ-102RC (0.5 – 4.5g•cm)
Back Tension (0.01 – 0.06 oz•inch)
5.89 – 19.61 mN•m
FF, REW CQ-201B (60 – 200 g•cm)
(0.83 – 2.78 oz•inch)
Mode Tension Meter Meter Reading
Forward CQ-403A more than 60 g
(more than 2.12 oz)
Reverse CQ-403R more than 60 g
(more than 2.12 oz)
SECTION 5
ELECTRICAL ADJUSTMENTS
0 dB=0.775 V
TAPE SPEED ADJUSTMENT
Setting:
Frequency counter
2,955 to 3,075 Hz
TAPE DECK SECTION
frequency counte
r
test tape
WS-48A
(3 kHz, 0 dB)
set
AUDIO OUT jack (J331)
–
+
10 kΩ
TUNER SECTION
Tuner section adjustments are done automatically in this set.

12
XR-CA440H
MEMO

XR-CA440H
1313
SECTION 6
DIAGRAMS
6-1. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Schematic Diagram:
•All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
•All resistors are in Ωand 1/4W or less unless otherwise
specified.
•f: internal component.
•C: panel designation.
•A: B+ Line.
•Power voltage isdc14.4V andfedwith regulated dcpower
supply from ACC and BATT cords.
•Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
(): AM (MW/SW)
〈〈 〉〉 : TAPE PLAYBACK
∗: Impossible to measure
•Voltagesare taken withaVOM(Inputimpedance 10MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
•Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
•Circled numbers refer to waveforms.
•Signal path.
F: FM
f: AM (MW/SW)
E: TAPE PLAYBACK
L: BUS AUDIO IN
Note on Printed Wiring Board:
•X: parts extracted from the component side.
•Y: parts extracted from the conductor side.
•W: indicates side identified with part number.
•f: internal component.
•: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
2.6 Vp-p
27.4 µs
2.6 Vp-p
54.3 ns
184 mVp-p
97.6 ns
5.1 Vp-p
30.5 µs
•Waveforms
– MAIN Board –
1IC1 1(XTOUT)
2IC501 qs (OSCOUT)
3IC501 qh (XOUT)
– KEY Board –
4IC901 y; (OSC)
Caution:
Pattern face side: Partsonthe patternfacesideseen from
(Conductor Side) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Component Side) the parts face are indicated.

XR-CA440H
1414
6-2. PRINTED WIRING BOARD – MAIN Board –
•Semiconductor
Location
Ref. No. Location
D1 H-2
D2 E-2
D51 F-11
D52 G-11
D351 J-13
D352 H-13
D501 K-9
D552 H-13
D581 G-12
D582 D-14
D584 C-13
D585 C-13
D586 C-13
D610 E-12
D611 E-12
D613 E-11
D614 D-11
D622 E-7
D624 E-7
D703 L-3
D704 L-4
D705 L-5
D706 L-5
D707 L-4
D708 L-4
D709 L-4
D710 L-3
D721 D-9
D722 E-9
D723 D-7
D724 E-9
D731 E-8
D732 E-9
D733 E-9
D734 C-7
D781 E-13
IC1 G-4
IC301 J-5
IC330 E-5
IC351 J-13
IC501 I-9
IC551 K-12
IC581 D-14
IC611 F-14
IC751 C-8
Q50 E-2
Q51 F-11
Q52 G-11
Q53 G-11
Q54 F-2
Q55 F-2
Q56 F-2
Q171 C-4
Q181 C-4
Q271 C-5
Q281 B-6
Q351 I-13
Q352 I-13
Q353 I-12
Q354 H-12
Q551 J-11
Q571 E-7
Q581 G-11
Q601 K-13
Q602 K-14
Q621 E-7
Q622 E-7
L100
CN701
CN301
C999
C120
L58
L59
C
D
E
F
G
H
I
J
K
L
M
12 3 4 5 6 7 8 9 10 11 12 13 14 15
A
B
Q50
R59
C59
Q54
Q56
R531
R532
C61
C15
R45
22
C533
C563
C543
C534
R566
C602
C580
IC330
IC751
IC611
IC581
IC351
IC551
IC501
IC301
IC1
C889 C888
51
26
76
11
40
31
21
L52
C998
(FOR SONY BUS)
G
S
D
8 7
16 15
6
14
5
13
BLK
RED
BLU/WHT
YEL
3
12 11
2
10
1
9
4
GRY
VIO
GRN
WHT
GRY/BLK VIO/BLK GRN/BLK WHT/BLK
15
6
VIO/BLKGRN
16
5
GRN/BLKVIO
17
4
GRY/BLK
18
3
WHT/BLK
19
2
RED
20
1
BLK
13
8
WHT
14
7
GRY
11
10
YEL
12
9
TO CAR CONNECTOR
16 17
(Page 18)

XR-CA440H
1515
6-3. SCHEMATIC DIAGRAM – MAIN Board (1/3) – • See page 13 forWaveform. •See page 20 for IC Block Diagrams.
(Page 16) (Page17)

XR-CA440H
1616
6-4. SCHEMATIC DIAGRAM – MAIN Board (2/3) – • See page 13 forWaveforms. •See page 20 for IC Block Diagrams.
(Page 15)
(Page 17)

XR-CA440H
1717
6-5. SCHEMATIC DIAGRAM – MAIN Board (3/3) – • See page 20 for IC Block Diagrams.
(Page 16)
(Page 15)
(Page 19)

XR-CA440H
1818
6-6. PRINTED WIRING BOARD – KEY Board –
R972
R962
164
49
48
3332
17
16
R973
R963
KEY BOARD (COMPONENT SIDE)
1-683-350-
11
(11)
AK
AK
AK AK
KA
AK
KA
S2
K1
S1
A1
A1
S1
K1
S2
A1
S1
K1
S2
A1
S1
K1
S2
A1
S1
K1
S2
A1
S1
K1
S2
A1
S1
K1
S2
A1
S1
K1
S2
A1
S1
K1
S2
A1
S1
K1
S2
A1
S1
K1
S2
LCD901
LIQUID CRYSTAL DISPLAY
1 54
(ILLUMINATION)
SOURCE
SEL
MODE
ATT
VOL
+
−
−
1
SENS
+
2
DISC ALBM
REP
3
SHUF
4
+ /ATA
6
BL SKIP/ −
5DSPL
MTL
BTM
OFF
MBP
D-BASS
(ILLUMINATION)
SEEK
AMS
KEY BOARD (CONDUCTOR SIDE)
1-683-350-
11
(11)
IC901
PL902
(LCD BACK LIGHT)
PL901
(LCD BACK LIGHT)
AKK
KK
AMAIN BOARD
CN701
1 2 3 4 5 6 7 8 9 10 11 12 13 14
A
B
C
D
E
F
G
H
AK
LED902, 903, 906, 922,
923, 940, 950
LED902, 903,
S902
LED906, S906
+
−
LED922, LED923,
S922
(Page 14)
•Semiconductor
Location
Ref. No. Location
D901 G-10
D991 F-9
IC901 F-7
LED902 C-1
LED903 C-2
LED906 C-1
LED922 C-13
LED923 C-14
LED940 C-12
LED950 C-3

XR-CA440H
1919
R985
R984
R983
R921R901
R902 R922
R923
R903
R904 R924
R925R905
R906 R926
R927
R907
R908
R909
R910
R911
R912
R913
R914
R951R941R931 R954R944R934 R955R945R935 R957R947R937R956R946R936
R987R977R967
R992R991R990
C994 C991 C993
C992
R995
C995
R996
R998
R997
CN901
LCD901
PL902
PL901
LSW920(1/2)
LSW900(1/2)
LSW900(2/2)
LSW920(2/2)
LSW925(1/2)
LSW901(1/2)
LSW901(2/2)
LSW925(2/2)
LSW923(1/2)
LSW927(1/2)
LSW911(1/2)
LSW907(1/2)
LSW905(1/2)
LSW921(1/2)
LSW924(1/2)
LSW921(2/2)LSW905(2/2)LSW907(2/2)LSW911(2/2)LSW927(2/2)LSW923(2/2)
LSW903(1/2)
LSW904(1/2)
LSW913(1/2)
LSW914(1/2)
LSW912(1/2)
LSW909(1/2)
LSW910(1/2)
LSW909(2/2)
LSW910(2/2)
LSW914(2/2)
LSW913(2/2) LSW903(2/2)
R994
R999
S922S902
D901
IC901
S906
R932 R942 R952 R933 R943 R953
R962R972
R963R973
LSW904(2/2)
LSW912(2/2)
LSW924(2/2)
R939R929R919
LED940 LED950
LED906
LED902
LED903 LED922
LED923
D991
1k
1k
1k
680680
680 680
680
680
1k 1k
1.5k1.5k
1.5k 1.5k
2.2k
2.2k
3.3k
4.7k
6.8k
10k
15k
22k
47k
1.5k1.5k1.5k 680680680 680680680 680680680680680680
680680680
2.2k2.2k2.2k
100p 0.022 0.1
0.1
1M
0.22
1k
1k
1k
12P
330k
0
UMZ6.8ENTR
LC75824W
1k 1.5k 1 k 1k 1.5k 1k
220220
220220
222222
CL-190Y CL-190Y
CL-190Y
CL-190D
CL-190D CL-190D
CL-190D
MM3Z4V7ST1
CE
CL
DI
CE
DI
CL
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
SEG25
SEG26
SEG27
SEG28
SEG29
SEG30
SEG31
SEG32
SEG33
SEG34
SEG35
SEG36
SEG37
SEG38
SEG39
SEG40
SEG41
SEG42
SEG43
SEG44
SEG45
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
COM1
COM2
COM3
COM4
SEG15
SEG25
SEG26
SEG27
SEG28
SEG29
SEG30
SEG31
SEG32
SEG33
SEG34
SEG35
SEG36
SEG37
SEG40
SEG41
SEG42
SEG43
SEG44
SEG45
SEG46
SEG47
SEG48
SEG49
SEG38
SEG39
SEG46
SEG47
SEG48
SEG49
COM1
COM2
COM3
COM4
GND
KEY-1
KEY-0
+B
+B
GND
NC
DIMMER
NC
LCD DRIVER
S47
S48
S49
COM1
COM2
COM3
COM4
VDD
VDD1
VDD2
VSS
OSC
CE
CL
DI
INH
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
S13
S14
S15
S46
S45
S44
S43
S42
S41
S39
S38
S40
S37
S36
S35
S34
S33
S32
S16
S17
S18
S19
S20
S21
S22
S23
S24
S25
S26
S27
S28
S29
S30
S31
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
S13
S14
S15
S16
S17
S18
S19
S20
S21
S22
S23
S24
S25
S26
S27
S28
S29
S30
S31
S32
S33
S34
S35
S36
S37
S38
S39
S40
S41
S42
S43
S44
S45
S46
S47
S48
S49
COM1
COM2
COM3
COM4
LIQUID CRYSTAL DISPLAY
(LCD BACK LIGHT)
(LCD BACK LIGHT)
(ILLUMINATION)
LED902,903
SOURCE
LED922,923
D-BASS
MODE
(ILLUMINATION)
OFF
SOURCE
MBP
+
VOL
VOL
-
ATT
MODE
ALBM +
ATA
6
DISC +
2
1
DISC -
ALBM -
BL SKIP
5
REP
3
SHUF
4
D-BASS
SEL
DSPL
MTL
FLASH-W
GND(COLOR)
LCD-CE
LCD-DATA
LCD-CLK
PANEL-SW
SEEK AMS
DSPL
-
SEEK AMS
+OFF
MTL
BTM
DISC +
2
1
DISC -
SENS
REP
3
SHUF
4
+
VOL
VOL
-
ATT
ALBM -
5
BL SKIP
ALBM +
ATA
6
SEL MBP
SEEK AMS
+
SEEK AMS
-
BTM
SENS
6-7. SCHEMATIC DIAGRAM – KEY Board – • See page 13 forWaveform.
(Page 17)

XR-CA440H
2020
•IC Block Diagrams
– MAIN Board –
IC1 TB2118F-EL-S
IC301 CXA2509AQ-T4
VDD
AMP
AMP
AMP
VDD2
12 3 45 6 7 8 9 10
24 23 22 21 20 19 18 17 16 15
11 12
14 13
XO
OSC
CE
DIN
CK
DOUT
SR
I/O-1
I/O-2
OUT-1 OUT-2
VDD2 IFC
VDD FM IN AM IN D-GND FM CP OUT VT AM CP OUT VCC REG
A-GND
XI
SERIAL
INTERFACE
I/O
PORT
OSCILLATOR
ON/OFF
BUFFER
REFERENCE
DIVIDER
PHASE
COMPARATOR
20BIT
IF COUNTER
PRESCALLER
12BIT
PROGRAMMABLE
COUNTER
+
–
REGULATOR
18BIT
18BIT 22BIT
40BIT SHIFT
REGISTER
REF
VCC
SEEK/RECP SEEK/RECP
+
–
SIG
4BIT SWALLOW
COUNTER
OUTPUT
PORT
+
+
+
–
+
–
+–
+
–
+–
12345 6 7 8 9 10
20
19
18
17
16
15
14
13
12
11
21222326
27
282930
31
32
33
34
37
38
39
40
24
25
PBFB1
PBRIN1
PBREF1
PBFIN1
35
36
PBGND
VCT
PBFIN2
PBREF2
PBRIN2
PBFB2
PBEQ1
PBOUT1
VCC
TAPEIN1
AUXIN1
MSLPF
LINEOUT1
NC NC
G2FB
G1FB
MSTC
DGND
MSOUT
NC
NC
INSW
TAPESW
MSMODE
DRSW
MSSW NC NC LINEOUT2 DIREF AUXIN2 TAPEIN2 PBEQ2 PBOUT2 GND
F2
120µ/70µ
X1
X1
VCT
+
F1
120µ/70µ24dB
F3
LPF
VCC
DETECT
MS ON/
OFF
FWD/RVS
TAPE EQ
TAPE/AUX
NR BIAS
24dB
MS
MODE
T2
T1
IC330 LC75421M-TLM-E
IC351 LB1930M-TLM IC581 BA8270F-E2
IC611 BA3918-V2
36 35 34 33
1 2
CCB
INTERFACE
CONTROL
CIRCUIT
LOGIC
CIRCUIT
CONTROL
CIRCUIT
+
–
+
–
32 31
+
–
30 29 28
+
–
27 26 25 24 23 22 21 20 19
+
–
+
–
+
–
R VREF
4 5
+
–
+
–
6 7
+
–
8 9 10
+
–
11 12 13 14 15 16 17 18
+
–
+
–
+
–
L VREF
3
LROUT
LFOUT
LFIN
LOUT
LSB
LBASS2 LBASS1
LTRE
LIN
LSELO
L5 L4 L3 L2 L1
VSS VDD
RROUT RFOUT RFIN ROUT RSB RBASS2 RBASS1
RTRE RIN RSELO R5 R4 R3 R2 R1 VREF
CL
DI
CE
1
2
3
4
56
7
8
9
10
VCC
IN2
S-GND
IN1
NC
NC
OUT2
NC
P-GND
OUT1
CONTROL
CIRCUIT
MOTOR
DRIVE
CIRCUIT
BUFFER
BUFFER
1
2
3
4
5
6
7 8
9
10
14
13
12
11
BUS ON
SWITCH
RESET
SWITCH
BATTERY
SWITCH
BUS ON
RST
BATT
CLK
VREF
DATA
GND
VCC
RST
BUS ON
CLK IN
BU IN
DATA IN
DATA OUT
+
–
+
–
+
–
+
–
OVER VOLTAGE
PROTECT
REGULATOR
12 3 45 6 7 8 9 10 12
11
NC
MODE2 MODE1
STB
VDD
AMP
VCC
ANT
COM
AM
FM
GND