Kenwood RXD-M55-H User manual

70%
MICRO HI-FI COMPONENT SYSTEM
RXD-M55-H/M55-N/M55-S
© 2002-4 PRINTED IN KOREA
B51-5790-00 (K/K) 3729
*Refer to parts list on page 25.
In compliance with Federal Regulations, following are repro-
duction of labels on, or inside the product relating to laser
product safety.
KENWOOD-Corp. certifies this equipment conforms to DHHS
Regulations No.21 CFR 1040. 10, Chapter 1, subchapter J.
DANGER : Laser radiation when open and interlock defeated.
AVOID DIRECT EXPOSURE TO BEAM.
Front glass *
(B10-)
Knob *
(K29-)
Cassette lid *
(A53-)
Miniature Phone jack
(E11-0399-05)
Panel ass'y *
(A60-)
Knob *
(K29-)
RXD-M55E-H/M55E-N/M55E-S
SERVICE MANUAL
Front glass *
(B10-)

RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S
2
CONTENTS / ACCESSORIES / CAUTIONS
CONTENTS / ACCESSORIES .................................. 2
EXTERNAL VIEW .......................................................3
DISASSEMBLY FOR REPAIR....................................4
BLOCK DIAGRAM ......................................................5
CIRCUIT DESCRIPTION ............................................6
ADJUSTMENT ..........................................................16
WIRING DIAGRAM ...................................................18
PC BOARD ...............................................................19
SCHEMATIC DIAGRAM ...........................................24
EXPLODED VIEW ....................................................33
PARTS LIST..............................................................35
SPECIFICATIONS ......................................Back cover
Contents
AC Plug Adaptor (1)
(E03-0115-05)
Use to adapt the plug on the
power cord to the shape of the
wall outlet.
(Accessory only for regions where
use is necessary.)
FM indoor antenna (1)
(T90-0855-05): V
(T90-0877-05): EE1E2E3E4E5KK1
M2H1H2T2T3M1X1X2
AM loop antenna (1)
(T90-0852-05): V
(T90-0893-05): EE1E2E3E4E5KK1
M2H1H2T2T3M1X1X2
Remote control unit (1)
(A70-1568-05): EE1E2E3E4E5H2T2T3H1
(A70-1569-05): KK1M1M2VX1X2
Batteries (R6/AA) (2)
Accessories
Cautions
1Remove the CD from the unit.
2Press the CD 6key.
3Wait for some time and verify that the display
appears as above.
4Wait a few seconds and turn the unit OFF.
Note related to transportation and movement
Before transporting or moving this unit, carry out the follow-
ing operations.
Operation to reset
The microcomputer may fall into malfunction (impossibil-
ity to operate, erroneous display, etc.) when the power
cord is unplugged while unit is ON or due to an external
factor. In this case, execute the following procedure to
reset the microcomputer and return it to normal condi-
tion.
Unplug the power cord from the power outlet, then
while holding the POWER or key depressed, plug
the power cord again.
÷Please note that resetting the microcomputer clears
the contents stored in and it returns to conditio n
when it left the factory.
or
After resetting the microcomputer, the display will show
as follow:
The marking of products using lasers (For countries other than U.S.A., U.S.-Military and Canada)
The marking of this product has been classified as Class 1. It means
that there is no danger of hazardous radiation outside the product.
Location: Back panel
CLASS 1
LASER PRODUCT
CAUTION
VISIBLE LASER RADIATION
WHEN OPEN. DO NOT STARE
INTO BEAM OR VIEW DIRECTLY
WITH OPTICAL INSTRUMENTS.
Inside this laser product, a laser diode classified as Class 3A laser
radiation is contained as alerted by the internal caution label shown
above. Do not stare into beam or view directly with optical instruments.

RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S
3
EXTERNAL VIEW
DIGITAL
OUT
OPTICAL
AUX
INPUT
L
R
GND
AM
ANTENNA
FRONT
SPEAKERS
(6-16
Ω)
L
- +
R
FM
75
Ω
Metallic cabinet *
(A01-)
AC power cord *
(E30-)
Lock terminal board *
(E70-)
Pin jack
(E63-1264-05)
AC power cord bushing
(J42-)
Tuner ass'y *
(W02-)
Oscillating module
(W02-1114-15)
*Refer to parts list on page 25.

RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S
4
DISASSEMBLY FOR REPAIR
How to open the CD tray when it does not come out.
1. Insert a flat driver and so on to a square hole in the mechanism as
shown in the figure.
2. Push a rack gear in the direction of arrow.
(At this time, the tray comes out slightly frontward.)
3. The tray can be opened by hand.

RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S
5
BLOCK DIAGRAM
AM 0dB=180mV
FM 0dB=600mV:75kDEV.
0dB=1.2V:1kHz
580mV
300mV
300mV
+34dB
TUNER
CD 0dB
0dB
INPUT VOL.
AUX
TAPE -2dB
SELECTOR
INPUT VOL.
MAIN VOL.1
0 to -78dB
MAIN VOL.2
0 to -18dB
AM
FM A.OUT
PB AMP
REC AMP
VR1.2
PLL DO
SA CE
SA DATA
SA CLK SD
ST
REC/PLAY
BEAT CANCEL
PHOTO
SOL
CPM
REC-R
REC-F
PACK-SW
PLAY-SW
D.OUT
A.OUT
(ONLY E,T,H TYPE)
FC DR
TR DR
SP DR
SL DR
TE
SL DF
SL DR
SP DR
SP DF
TR KR
TR KF A
B
FC SR
FC SF
PD
LD
D
C
F
E
LDC
DATA
CLK
CE
A.MUTE ON/STANDBY
++
-B
+B
FL DRIVER
+
PRE. AMP
LED
FL DRIVER
ON/OFF
+
u-COM
STAND-BY LED
TACT KEY
AC IN
REMOCON. MODULE
BACK-UP CIRCUIT
X14,K401
FE
+
+
L1,2
+9.0V
0dB
CASSETTE DECK
CD
TUNER
TUNER
FLAT
TAPE REC
TAPE PLAY
AUX IN E.VOL
INPUT
VOL.
AMP
CD
AUX IN
E.VOL
X29,IC601
LC75343M
TUNER PACK
ERASE
REC/PLAY
HA12230NT
IC1
TRAP
BIAS
OSC
BIAS
DECK MECHA
DIGITAL OUT
X29,A601
DSP
X29,IC22
MN6627482WB
DAC
MAIN u-COM
X29,IC701
REMOCON MODULE
X14,A501
X14,S516
ROTALY ENCODER
LED
KEY
FL DRIVER
X14,IC501
X29,IC801
RDS IC
FL
ED501
4ch DRIVER
IC23
RF-AMP
AN8399SA-E1
IC21
CD MECHA
X29,Q111-114
POWER AMP
PROTECTION
J2
X29,D3
POWER AMP.
X29,Q13
-30V
AVR
X29,
+5V
AVR
AVR
IC101
+9V
FIL
PRIMARY
RELAY
+5.4V
AVR
IC402
D403
X14,
-8dB
ATT.
X29,J601
LOUDNESS BASS,MID,TRE
TONE
10dB
EX BASS
Q1,2 K1
HEAD-
OUT
PHONE
REC OUT
BIAS ADJ.
Q15-18
Q5
X29,X29,
X14,
GAIN DISTRIBUTOR
VOL.
MAIN
X29,
Q10
LEVEL DIAGRAM
(X28- )
RXD-M55
W02-2919-05 (M TYPE)
W02-2920-05 (OTHERS)
RXD-M55

RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S
6
CIRCUIT DESCRIPTION
Frequency Frequency
P.CH K1(K,P TYPE) K2(M,V TYPE) E1/E3 P.CH K1(K,P TYPE) K2(M,V TYPE) E1/E3
(E,E2,T,H,M,V,X) (E,E2,T,H,M,V,X)
1 FM 98.30MHz FM 98.30MHz FM 98.30MHz 16 FM 98.00MHz FM 98.00MHz FM 98.00MHz
2 FM 108.0MHz FM 108.0MHz FM 108.0MHz 17 FM 98.50MHz FM 98.50MHz FM 98.50MHz
3 FM 89.10MHz FM 89.10MHz FM 89.10MHz 18 FM 87.50MHz FM 87.50MHz FM 87.50MHz
4 FM 87.50MHz FM 87.50MHz FM 87.50MHz 19 AM 990kHz AM 990kHz AM 945kHz
5 FM 90.00MHz FM 90.00MHz FM 90.0.0MHz 20 FM 97.40MHz FM 97.40MHz FM 97.40MHz
6 FM 87.50MHz FM 87.50MHz FM 87.50MHz 21 AM 530kHz AM 530kHz AM 531kHz
7 FM 87.50MHz FM 87.50MHz FM 87.50MHz 22 FM 87.50MHz FM 87.50MHz FM 87.50MHz
8 AM 1610kHz FM 87.50MHz AM 1503kHz 23 FM 87.50MHz FM 87.50MHz FM 87.50MHz
9 AM 1700kHz AM 1610kHz AM 1584kHz 24 FM 87.50MHz FM 87.50MHz FM 87.50MHz
10 AM 1000kHz AM 1000kHz AM 999kHz 25 FM 87.50MHz FM 87.50MHz FM 87.50MHz
11 AM 630kHz AM 630kHz AM 621kHz 26 FM 87.50MHz FM 87.50MHz FM 87.50MHz
12 AM 1440kHz AM 1440kHz AM 1350kHz 27 FM 87.50MHz FM 87.50MHz FM 87.50MHz
13 FM 106.0MHz FM 106.0MHz FM 106.0MHz 28 FM 87.50MHz FM 87.50MHz FM 87.50MHz
14 AM 530kHz AM 530kHz AM 531kHz 29 FM 87.50MHz FM 87.50MHz FM 87.50MHz
15 FM 87.50MHz FM 87.50MHz FM 87.50MHz 30 FM 106.0MHz FM 106.0MHz FM 106.0MHz
Type E/E2/T/H K/P M/V X
✽Voltage Range 4.2V~5.0V 2.6V~4.1V 1.4V~2.5V 0.7~1.3V
Set Destination Band Receiving Frequency Range Channel IF RF
Space
K/P K1 FM 87.5MHz~108.0MHz 100kHz +10.7MHz 25kHz
AM 530kHz~1700kHz 10kHz +450kHz 10kHz
E/T/H E3 FM 87.5MHz~108.0MHz 50kHz +10.7MHz 25kHz
E2 RDS AM 531kHz~1602kHz 9kHz +450kHz 9kHz
M/X/V E1 FM 87.5MHz~108.0MHz 50kHz +10.7MHz 25kHz
AM 531kHz~1602kHz 9kHz +450kHz 9kHz
M/V K2 FM 87.5MHz~108.0MHz 100kHz +10.7MHz 25kHz
AM 530kHz~1610kHz 10kHz +450kHz 10kHz
1. Initializing
1-1 Initializing Method
• While holding down the [POWER] key, plugged in the power cord to AC power wall outlet.
1-2 Initializing Operation
• During the initial operation, the display shows "RESET" and after that it will be returned to standby condition.
• If any mechanisms error occurred, the error indication is displayed as "ERR" in the display.
1-3 Mechanism Initializations
1CD Mechanism
• If a mechanism error occurred, the error indication is displayed as "C ERR" in the display.
2Deck Mechanism
• If a mechanism error occurred, the error indication is displayed as "X ERR" in the display.
2. Tuner Destination
✽Pin 3 of microcomputer (X29, IC701).
3. Tuner Preset Frequency

RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S
7
CIRCUIT DESCRIPTION
8th Dot(Display) 1st figure 2nd figure 3rd figure 4th figure
Mechanism FWD REC Inhibit RVS REC Inhibit Cassette Half Tape Play
Half Switch Detection SW Detection SW Detection SW Detection SW
ON Blank Blank Blank Blank
OFF E E E E
Keys Display Operation
• 4 Seconds Recording
If the REC/ARM key is pressed, the system record for 4 seconds.
Then, it rewinds to the REC starting position and plays back automatically.
TAPE REC TAPE If the REC/ARM key is pressed, during the 4 seconds REC operation, the
system records further for 4 seconds, then returns to the starting position
of the first 4 seconds REC operation and plays back.
SOUND Beat-C ON Beat cancel will be on while pressing the sound key.
Keys Display Operation
CD-PLAY/PAUSE 05 ✽ ✽ : ✽ ✽ • Tracking-servo on.
(Cyclically changed the mode (✽ ✽ : ✽ ✽)Time Display • Pickup moves inward.
05 and 03 by pressing the key.) 03 ✽ ✽ : ✽ ✽ • Tracking-servo off. (for checking TE)
(✽ ✽ : ✽ ✽)Time Display • Pickup moves outward.
CD STOP 00 : 00 Stop the CD operation.
Adjustment value/mean value
(Cyclically changed in the 07 FG/FE FG value /FE value
stop mode only.) 08 FB/FO FBAL value /FO value
09 TG/TE TG value /TE value
10 TB/TO TBAL value /TO value
SKIP UP Ex.01~02 • Track number up.
SKIP DOWN Ex.02~01 • Track number down.
SKIP UP Usual Indication • Play the first track number in the stop mode.
SKIP DOWN Usual Indication • Play the last track number in the stop mode.
Test Mode Keys Setting Method
CD MODE CD PLAY key
DECK MODE TAPE PLAY Insert the AC cord to AC wall
✽ SUB CLOCK OSC MODE key outlet while holding down the
DIAGNOSIS left key.
4. Test Mode
4-1 Setting method of the Test Mode
✽ The oscillation diagnosis (existence of oscillation and measurement of period) of a sub clock is performed before the test
mode is entered. If the diagnosis result is OK, the system enters the test mode.
If the diagnosis result is NG, the oscillation of the sub clock is diagnosed again. If the result is OK, the system enters the
test mode. If the diagnosis result is continuously NG 5 times, the system stops with "ERR1" and "ERR2" displayed.
4-2 Cancel of the test mode
• Initialized and cancel the test mode if pulling out the power cord.
• Cancel the test mode only if the power key is turned off.
4-3 Contents of the Test Mode
• The muting during mode selection is not controlled in the test mode.
• During the test mode, it can be operated in a special manner that is different from an ordinary operation by using the keys
on the main body, specifically as shown in the following tables.
4-4 CD Test Mode
4-5 Deck Test Mode
✽ Mechanism half switches indication
The mechanism half switches status are indicated "blank" or "E" in the display.

RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S
8
CIRCUIT DESCRIPTION
X28,IC1
DECK SYSTEM IC
HA12230NT
X14,IC501
FL DRIVER
(MN12510F) DECK MECHA.
X14,ED501 X29,IC601
SYSTEM IC
(LC75343M)
X29,IC701
MN101C51FGB
X29,IC22 TUNER ASSY
DSP IC
(MN6627482WB) PLL IC
X29,IC801
CD MECHA.
(KSM213)
RDS IC (E/T TYPE)
(BU1923F)
KEY REMOTE ENCODER
KEY1,2 X14,A501 X14,S516
Vaccume Fluorescent
Display
(HNA-14MS07T)
Voltage 0 0.89 1.55 2.00 2.61 3.02 3.47 3.95 5.00
Range
Key 1 ON/ AUX TUNER SKIP STOP CD SKIP CD (off)
(Pin 5) STANDBY DOWN PLAY UP OPEN
Key 2 REC SET MODE O.T.E. TAPE REPEAT SOUND (off)
(Pin 6) PLAY
5. Microcomputer : MN101C51FGB(X29,IC701)
5-1 Microcomputer Periphery Block Diagram
Key Matrix VREF =5.0V

RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S
9
CIRCUIT DESCRIPTION
Pin No. Pin Name I/O Pin Description Active
HL
1 VREF- - Power supply (-) for A/D converter.
2 PH I Deck reel sensor input.
3 TN TYPE I Discrimination of tuner destination.
4 S LEVEL I RDS signal level input. (E/T version only)
5,6 KEY1,KEY2 I A/D key (1, 2) input.
7 A LEVEL I Unused.
8 TH I Unused.
9 CD PROTECT I Detection pin of CD protection.
10 VREF+ - A/D reference voltage input of the A/D converter.
11 VDD I Pin for power supply (+5V).
12 OSC2 O Main clock output (8.388MHz).
13 OSC1 I Main clock input (8.388MHz).
14 VSS - Connected to be ground.
15 XI I Timer clock input (32.768kHz).
16 XO O Timer clock output (32.768kHz).
17 MMOD - Connected to be ground.
18 SDI O Data output to FL driver.
19 SDO I Data input from FL driver.
20 SCLK O Clock output to FL driver.
21 MLD O CD DSP command load signal output. Load
22 SUBQ I CD sub code input.
23 SQCK O CD sub code clock output.
24 CL SW I Input pin of close switch for CD tray. Closed
25 RESET I Reset signal input for microcomputer. Reset
26 CE I Back up detection input. AC On AC Off
27 OP SW I Input pin of open switch for CD tray. Opened
28 CD POWER O ON/OFF control pin for CD DSP power. ON OFF
29 XRST O CD DSP reset output. Reset
30 SLT SW I CD start limit switch input. "L" : Start Limit Position
31 REM CONTROL I Remote control signal input.
32 NO USE - Unused.
33 RDSCLK I RDS clock input. (E/T version only)
34 CE2 I Detection pin of voltage drop.
35 CD BLKCK I Sub code block clock input.
36 MDATA O CD DSP command data output.
37 STAT I CD DSP status signal input.
38 MCLK O CD DSP command clock signal output.
39 CLOSE O Control pin of CD tray motor.
40 OPEN O Control pin of CD tray motor.
41 HP I I Detection pin for headphones jack. Detected
42 FLASH UC 1 I Power supply for flash ROM.
43 FLASH UC 2 I Power supply for flash ROM.
44 EVOL CE O Chip enable output of electronic volume (X29, IC601).
45 EVOL.CLK O Clock output of electronic volume (X29, IC601).
46 EVOL.DATA O Data output of electronic volume (X29, IC601).
47 POWER RLY O Power relay control. ON
48,49 N.C. - Unused.
50 FLASH WRITE I Unused.
51 N.C. - Unused.
52 PLL CLK O PLL IC clock output.
53 PLL DO/ST I PLL IC data input.
54 PLL DAT O PLL IC data output.
55 PLL CE O PLL IC chip enable output.
5-2 Port Description of Microcomputer

RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S
10
CIRCUIT DESCRIPTION
Pin No. Pin Name I/O Pin Description
1 BCLK - Unused.
2 LRCK - Unused.
3 SRDATA - Unused.
4 DVDD1 - Digital power supply.
5 DVSS1 - Digital ground.
6 TX O Digital Out output.
7 MCLK I CPC command clock signal input.
8 MDATA I CPU command data signal input.
9 MLD I CPU command load signal input. "L" : Load
10 SENSE - Unused.
11 FLOCK - Unused.
12 TLOCK - Unused.
13 BLKCK O Sub code block clock output.
14 SQCK I Sub code Q data clock input pin.
15 SUBQ O Sub code Q data signal output pin.
16 DMUTE - Connected to be ground.
17 STAT O Status signal output.
18 RST I Reset signal input.
19 SMCK - Clock signal output (unused).
20 PMCK - Clock signal output (unused).
21 TRV O Traverse stop signal output.
22 TVD O Traverse control pin.
23 PC O Spindle motor on signal output.
24 ECM O Control signal output for spindle motor.
25 ECS O Control signal output for spindle motor.
Pin No. Pin Name I/O Pin Description Active
HL
56 SD I SD detector input. Detected
57 TU MUTE O Tuner mute control. Mute ON
58 PLAY SW I Detection switch input of head position for deck. Playback
59 REC R SW I Deck reverse recording switch input. OFF ON
60 REC F SW I Deck forward recording switch input. OFF ON
61 HALF SW I Cassette half switch input. Detected
62 BEAT C O ON/OFF control pin of beat cancel for deck. ON OFF
63 R/P O Deck recording & playback changeover. Recording Playback
64 BIAS O ON/OFF control pin of bias for deck. ON OFF
65 A/B-1 O Deck recording mute & head select control 1.
66 A/B-2 O Deck recording mute & head select control 2.
67 MUTE O Deck line mute control. ON
68 CPM O Control pin of capstan motor for deck.
69 SOL O Control pin of solenoid for deck.
70 RDS DATA I RDS data input. (E/T version only)
71 PROTECT I Detection pin of the protection for power supply.
72 AMUTE O Audio mute output.
73 SP RLY O On/off control pin for speaker relay.
74 EEP SDA I/O EEPROM data input/output.
75 EEP SCL O EEPROM clock output.
76,77 ENC A,B I Volume encoder (X14, S516) signal inputs.
78 LED STBY RED O Standby led (red) control pin. OFF ON
79 LED STBY GRN O Standby led (green) control pin. OFF ON
80 NCS O Chip enable output of FL driver.
6. Description of ICs
6-1 DSP IC : MN6627482WB(X29, IC22)

RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S
11
CIRCUIT DESCRIPTION
Pin No. Pin Name I/O Pin Description
26 KICK O Kick pulse output for tracking driver.
27 TRD O Tracking servo drive PWM output (-).
28 FOD O Focus drive output.
29 VREF I Reference power supply for DA output pin.
30 FBAL O Focus balance adjusting output.
31 TBAL O Tracking balance adjusting output.
32 TE I Tracking error signal input.
33 FE I Focus error signal input.
34 RFENV I RF envelope signal input.
35 VDET I VDET input (connected to be ground).
36 OFT I Off track signal input. "H" : Off Track
37 TRCRS I CROSS input pin.
38 RFDET I RF detector signal input pin.
39 BDO I Drop out signal input. "H" : Drop Out
40 LDON O Laser on signal output.
41 PLLF2 - Unused.
42 TOFS - Unused.
43 WVEL - Unused.
44 ARF I RF signal input.
45 IREF I Reference current input pin.
46 DRF I DSL bias pin.
47 DSLF O DSL loop filter pin.
48 PLLF O PLL loop filter pin.
49 VCOF - Analog power supply.
50 AVDD2 - Analog power supply.
51 AVSS2 - Analog ground.
52 EFM/CK384 - Unused.
53 PCK/DSLB - Unused.
54 VCOF2 O Jitter free VCO loop filter pin.
55 SUBC - Unused.
56 SBCK - Connected to be ground.
57 VSS - GND
58 X1 I Crystal oscillation circuit input. f =16.9344MHz
59 X2 O Crystal oscillation circuit output. f =16.9344MHz
60 XVDD - Analog power supply.
61 BYTCK - Unused.
62 CLDCK - Unused.
63 FCLK - Unused.
64 IPFLAG - Unused.
65 FLAG - Unused.
66 CLVS - Unused.
67 CRC - Unused.
68 DEMPH - Unused.
69 RESY O Capacitance connection pin for RF bright side envelope detection.
70 IOSEL - Connected to be analog power supply.
71 TEST - Connected to be analog power supply.
72 AVDD1 - Analog power supply.
73 OUTL O L ch audio output.
74 AVSS1 - Analog ground.
75 OUTR O R ch audio output.
76 RSEL - Unused.
77 CSEL - Connected to be ground.
78 PSEL - GND
79 MSEL - GND
80 SSEL - Unused (connected to be power supply)

RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S
12
CIRCUIT DESCRIPTION
INPUT OUTPUT MODE
IN 1 IN 2 OUT 1 OUT 2 MOTOR
00
∞∞ STOP
1 0 H L CW/CCW
0 1 L H CCW/CW
1 1 L L BRAKE
Pin No. Pin Name I/O Pin Description
1 IN2 I Input pin.
2 VCC - Power supply.
3 OUT2 O Output pin.
4 NC - Unused.
5 GND - GND
6 VS - Power supply for output side.
7 OUT1 O Output pin.
8 VREF - Control power supply.
9 IN1 I Input pin.
Pin No. Pin Name I/O Pin Description
1 IN2 I Driver 2 input.
2 PC2 I Power cut input (channel 2 mute).
3 IN1 I Driver 1 input.
4 PC1 I Power cut input (channel 1 mute).
5 RESOUT O Reset output.
6 N.C. - Unused.
7 N.C. - Unused.
8 PGND1 - Ground 1for driver.
9 PVCC1 - Power supply 1 for driver.
10 V01- O Driver 1 inverted output.
11 V01+ O Driver 1 forward output.
12 V02- O Driver 2 inverted output.
13 V02+ O Driver 2 forward output.
14 V03- O Driver 3 inverted output.
15 V03+ O Driver 3 forward output.
16 V04- O Driver 4 inverted output.
17 V04+ O Driver 4 forward output.
18 PVCC2 - Power supply 2 for driver.
19 PGND2 - Ground 2 for driver.
20 STBY I Standby input.
21 N.C. - Unused.
22 N.C. - Unused.
23 SVCC - Power supply.
24 VREF - Reference voltage input.
25 IN4 I Driver 4 input.
26 IN3 I Driver 3 input.
6-2 Channel BTL Driver : AN4801SB-E1(X29, IC23)
6-3 CD Motor Driver : TA8409S (X29, IC26)
Function
∞: High Impedance
Note) Input : "H" Active

RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S
13
CIRCUIT DESCRIPTION
Pin No. Pin Name I/O Pin Description
1 QUAL O Output for signal quality indication.
2 RDATA O Demodulation data output.
3 VREF I Reference voltage input.
4 MUX I Composite signal input.
5 VDD1 - Analog power supply.
6 VSS1 - Analog GND.
7 VSS3 - Analog GND.
8 CMP I Comparator.
9 T2 I Test pin (connected to be ground).
10 T1 I Test pin (connected to be ground).
11 VSS2 - Digital GND.
12 VDD2 - Digital power supply.
13 XI I Crystal oscillation circuit input.
14 XO O Crystal oscillation circuit output.
15 N.C. - Unused.
16 RCLK I/O Demodulation clock.
Pin No. Pin Name I/O Pin Description
1 DI I Serial data input pin for control.
2 CE - Chip enable pin.
3 VSS - Ground pin.
4 LOPOUT O Output pin of general-purpose operation amplifier.
5 LINM I Non-inverted input pin of general-purpose operation amplifier.
6 LINP I Non-inverted input pin of general-purpose operation amplifier.
7 LOUT O ATT + equalizer output pin/ capacitor connection pin comprising filter for super-bass.
10,9,28, LBASS1,LBASS2 Capacitor and resistor connection pins comprising filters for
29,8,30 RBASS1,RBASS2 - bass and super-bass band or for mid and bass band.
LSB,RSB
11 LTRE - Capacitor connection pin comprising treble band filter.
12 LVRIN I Volume input pin.
13 LSEL0 O Input selector output pin.
14,24 L5,R5 I Input signal pin (open).
15,23 L4,R4 I AUX input.
16,22 L3,R3 I TUNER input.
17,21 L2,R2 I DECK (playback) input.
18,20 L1,R1 I CD input.
19 VREF - Reference voltage for analog ground.
25 RSEL0 O Input selector output pin.
26 RVRIN I Volume input pin.
27 RTRE - Capacitor connection pin comprising treble band filter.
31 ROUT O ATT + equalizer output pin/ capacitor connection pin comprising filter for super-bass.
32 RINP I Non-inverted input pin of general-purpose operation amplifier.
33 RINM I Non-inverted input pin of general-purpose operation amplifier.
34 ROPOUT O Output pin of general-purpose operation amplifier.
35 VDD - Power supply pin.
36 CL I Clock input pin for control.
6-4 Electronic Volume System IC : LC75343M : (X29, IC601)
6-5 RDS Demodulator IC : BU1923F (X29, IC801) E/T Type only

RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S
14
CIRCUIT DESCRIPTION
Pin No. Pin Name I/O Pin Description
1 VREF - Reference voltage.
2 GND - Ground pin.
3 BINR I PB B deck right channel input.
4 AINR I PB A deck right channel input.
5 PBNFR - PB EQ. feed back.
6 PBEQR O Equalizer right channel output (70u).
7 EQOR O Equalizer right channel output (120u).
8 TAIR I Tape right channel input.
9 PBOOR O PB right channel output.
10 MAOUT O MS amplifier output (unused).
11 MAI I MS amplifier input (unused).
12 IREF I Equalizer reference current input.
13 RECIR I Rec equalizer right channel input.
14 RIP O NAB output.
15 RECOR O Rec equalizer right channel output.
16 RECOL O Rec equalizer left channel output.
17 VCC - Power supply.
18 RECIL I Rec equalizer left channel input.
19 MUTE I Mode control input.
Pin No. Pin Name I/O Pin Description
1 PD I APC Amp input
2 LD O APC Amp output
3 VCC - Power supply
4 RF I RF amp inverting input
5 RF OUT O RF addition amp output
6 RF IN I AGC amp input
7 LDRCTL - LD reference voltage control
8 CAGC - AGC loop filter connection
9 ARF O AGC output
10 CEA - Capacitance connection for RF HPF-Amp
11 3TOUT O 3T-ENV output
12 CSBDO - Capacitance connection for RF dark side envelope detection
13 BDO O BDO output
14 COFTR - Capacitance connection for RF bright side envelope detection
15 OFTR O OFTR output
16 NRFDET O NRFDET output
17 GND - Ground
18 SLPSW - Sleep mode control
19 VREF O VREF output
20 TEN I TE. Amp inverting input
21 TEOUT O TE. Amp output
22 FEN I FE. Amp inverting input
23 FEOUT O FE. Amp output
24 GCTL O Gain & APC control
25 FBAL O F. BAL control
26 TBAL O T. BAL control
27 E I Tracking signal input 1
28 F I Tracking signal input 2
29 D I Focus signal input 4
30 B I Focus signal input 2
31 C I Focus signal input 3
32 A I Focus signal input 1
6-6 CD RF IC : AN8399SA-E1 (X29,IC21)
6-7 PB/REC Equalizer System IC : HA12230NT (X28, IC1)

RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S
15
CIRCUIT DESCRIPTION
Pin No. Pin Name I/O Pin Description
1 X IN I Crystal resonator connection.
2 CE I Chip enable.
3 DI I Input serial data.
4CLI
Used as the synchronization clock when serial data is input to the DI(pin 3), or
when serial data is output DO(pin 5).
5 DO O Outputs serial data.
6 B01 •Dedicated output pins.
7 B02 O•The output states are determined by B01 to B04 in the serial data.
8 B03 "Data" =0 : Open "Data" =1 : Low
9 B04 •These pins go to the open state after the power-on reset.
Pins used for both input and output.
10,12 I01, I02 I/O The input or output state is determined by bits I0C1and I0C2 in the serial data.
"Data" = 0 : Open, "Data" = 1: Low
11 IF IN I IF count input.
13 AM IN I Local oscillator signal input.
14 FM IN I Local oscillator signal input.
15 VDD - Power supply.
16 PD O PLL charge pump output
17, 18 AIN I The MOS transistor used for the PLL active low-pass filter.
AOUT O
19 VSS - Ground.
20 X OUT O Crystal resonator connection.
Pin No. Pin Name I/O Pin Description
20 A120/70 I Mode control input (connected to GND).
21 A/B I Mode control input.
22 B 1/11 I Mode control input (connected to GND).
23 PBOL O PB left channel output.
24 TAIL I Tape left channel input.
25 EQOL O Equalizer left channel output (120u).
26 PBEQL O Equalizer left channel output (70u).
27 PBNFL - PB EQ. feed back.
28 AINL I PB A deck left channel input.
29 BINL I PB B deck left channel input.
30 RECRET - Rec return.
6-8 PLL Frequency Synthesizer LSI : LC72131M(Tuner Assy IC2)

RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S
16
ADJUSTMENT
No.
1
ITEM INPUT
SETTING OUTPUT SETTING PLAYER SETTING ALIGNMENT POINT ALIGN FOR FIG.
LASER
CURRENT
Test disc
Type 4
Connect the DC
voltmeter to
CN23(#1 and #2) in
X29
Press the "PLAY" key
to check that the dis-
play is "03" or "05"
–220mV to 550mV
Note:
Type 4disc :SONY YEDS-18 Test Disc or equivalent. (KTD-02)
LPF : Around 47kΩ+ 390pF or so.
CD player adjustment
Insert the AC cord to AC wall outlet while holding down the [CD PLAY/PAUSE] key.
No
< 1 >
< 2 >
< 3 >
< 1 >
ITEM
Demagneti-
zation and
cleaning
Azimuth of
the
REC/PLAY
head
TAPE SPEED
(NORMAL)
BIAS
CURRENT
INPUT
SETTING
–
SCC-1727
TCC−153
MTT−114
10kHz,
−10dB
TCC−110
MTT−111
SCC−1727
3kHz
(B)
Connect the
AG to jack.
1kHz:
-30dBs
10kHz:
-30dBs
OUTPUT
SETTING
–
(A)
(A)
(A)
DECK
SETTING
Demagneti-
zation:
POWER OFF
Cleaning:
PLAY
PLAY
PLAY
REC and
PLAY
ALIGNMENT
POINT
Recording
head, erase
head,capstan
pinch roller
RVS FWD
Trimming pot
in the motor.
VR 1 (L)
VR 2 (R)
ALIGN FOR
Demagnetize the REC / PLAY head
with the head eraser. 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 oscilloscope to become close to a
45° straight line.
Fig.1
Check the tape speed so that
3kHz(±2%) is obtained at the center
of the tape.
Record 1kHz and 10kHz alternately,
and adjust the bias current adjust-
ment potentiometer for the playback
levels (-21dBs)to become the same.
FIG.
ø. CASSETTE MECHANISM UNIT
¿. PC BOARD ADJUSTMENT
Cassette Deck adjustment
DIGITAL
OUT
OPTICAL
AUX
INPUT
L
R
FRONT
SPEAKERS
(6-16
Ω)
L
- +
R
(TAPE Lch),3 pin
X28 CN1
(TAPE Rch),5 pin
{
(A)
(B)
Fig.1
AC voltmeter AG Oscilloscope AC voltmeter
Frequency counter
SYSTEM CONNECTIONS
0dBs=0.775V

RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S
17
ADJUSTMENT
No. ITEM INPUT
SETTINGS
OUTPUT
SETTINGS
AMPLIFIER
SETTINGS
ALIGNMENT
POINTS ALIGN FOR FIG.
Unless otherwise specified, the individual switches should be set as following :
POWER : ON
1 IDLE CURRENT –
Connect a DC
voltmeter to
CN11 ( 1 2 ), Rch
CN11 ( 3 4 ), Lch
(X29)
VOLUME : 0
VR1 (L)
VR2 (R)
(X29)
4.4 mV

0-11
0-21
2-70
No.
KOREA
EUROPE
U.K.
H1
E1
T2
DESTINATION
COUNTRY
U.S.A.
GENERAL MARKET
ABB.
M1
K1
UNIT
AUSTRALIA
DESTINATION
42-70
SHANGHAI V
40-11
40-71
No.
UNIT
EUROPE
U.S.A.
COUNTRY
E
X1
K
ABB.
92-10
DESTINATION
GENERAL MARKET
T3U.K. 2-70
KOREA H2
UNIT
No.
0-21
0-71
ABB.COUNTRY
AUSTRALIA
EUROPE
X2
M2
E2
1
4
6
1
1
6
16 1
116
1
5
5
1
11
11 11
1
4
00-11
UNIT No.
AUSTRALIA
EUROPE E
X1
DESTINATION
COUNTRY
U.S.A.
ABB.
K
SHANGHAI V
00-11
02-70
12-10
CN406 220V- 110V-
T401
CN403
CN405
F2
F1
CN404
240V 120V
AUSTRALIA
DESTINATION
COUNTRY
EUROPE
GENERAL MARKET
KOREAKOREA
GENERAL MARKET
U.S.A.
COUNTRY
DESTINATION
EUROPE
SHANGHAI
U.S.A.
COUNTRY
DESTINATION
EUROPE
AUSTRALIA
UNIT No.
M2 0-21
ABB.
U.K.
X2
UNIT No.
E2
H2
T3
2-70
2-70
2-70
0-71
ABB.
U.K. T2
H1
M1
2-70
K1
UNIT No.
0-11
0-21
2-70
E1 2-70
ABB.
532-10
492-70
490-71
V
K
X1
E
490-11
0-11
UNIT No.
EUROPE
COUNTRY
DESTINATION
ABB.
E1
GENERAL MARKET M1
H1KOREA
T2U.K.
U.S.A. K1
2-70
0-11
UNIT No.
2-70
GENERAL MARKET
EUROPE
KOREA
U.K.
E2
T3
M2
H2
COUNTRY
DESTINATION
ABB.
AUSTRALIA X2
1
23
1
23
16
61
81
18
17
17
1
1
1
2
2
1
4
1
4
1
240V
120V
0V
0V
120V : K TYPE
220V : V TYPE
240V : X TYPE
230V : E,T,H TYPE
114
114
2
1
P701
J1
L
R
AUX IN J601
J2
PHONES
A601
OUT
DIGITAL
RXD-M55-H (X29-284X-XX)
RXD-M55-S (X29-28XX-XX)
RXD-M55-N (X29-284X-XX)
ANT
FM
GND
AM
CN11 CURRENT
BIAS
ADJ. POINT
CN22
CN21
CN26
CN73
CN23
RXD-M55-S (X28-32XX-XX)
S401
RXD-M55-N (X14-749X-XX)RXD-M55-H (X14-749X-XX)
RXD-M55-S (X14-7XXX-XX)
RXD-M55-H (X28-320X-XX)
RXD-M55-N (X28-320X-XX)
CN72 CN1
WH1 CN2
CN501
CN71
CN502 WH502
CN503 WH501
M TYPE
ONLY M TYPE
EXCEPT
E401
CN2
AC POWER
CN402
CORD
WH401
(X29-2842-70) : RXD-M55E-S/-H/-N
POWER AMP
u-COM,CD
(X29-28XX-XX) : RXD-M55-S/-H/-N
(D40-1515-05)
ASS'Y
CD PICKUP
CD MECHANISM
ASS'Y
(D40-1714-15)
TUNER
(W02-2920-05)
(W02-2919-05)
: E,T,H TYPE
: K,X,M,V TYPE
CASSETTE
(X28-3202-70)
(X28-32XX-XX)
: RXD-M55E-S/-H/-N
: RXD-M55-S/-H/-N
(X14-7XXX-XX)
: RXD-M55E-S/-H/-N
(X14-7492-70)
(X14- ) (A/4)
TACT SWITCH
DISPLAY UNIT(FL)
: RXD-M55-S/-H/-N
ASS'Y
MECHANISM
CASSETTE
(D40-1772-05)
TACT SWITCH
(X14- ) (D/4)
TACT SWITCH
REMOTE CON.
SENSOR
(X14- ) (C/4)
TRANSFORMER
POWER
TRANSFORMER
POWER
(X14- ) (B/4)
SUPPLY
POWER
(L07-3184- 5) (L07-3182- 5) : K TYPE
5) : V TYPE(L07-3187-
5) : X TYPE
5) : E,T,H TYPE(L07-3183-
(L07-3186-
RXD-M55
L-
L+
R-
R+
WIRING DIAGRAM
RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S
18

2
ACEG IBDFHJ
1
3
5
7
4
6
CD OPEN
R407
W508
W513
41
4443402718521
W514
W515
W516
W518
C408
C403
C406
R403
R402 R405
R406
C405
C404
C503
C504
C505
C506
R513
R521
R524
R501
R502
R503
R505
R506
R507
R508
R509
R510
R522
R523
R534
11
3
5
4
4
C507
SECONDARY
PRIMARY
YEL
240V120V
MAIN TRANSFORMER
F2
F1
T1.25A L 250V
T1.25A L 250V
WHT
21
AUX TAPE PLAY
O.T.E
4MHz
SOUND
REPEAT
WHT
12
SKIP UP
SKIP DOWN
STANDBY/ON
STOP/
MODE
TUNIN
MODE
TUNER CD PLAY/PAUSE
2
117
16
WHT
SET/
DEMO
REC
W407
W405
C402
K401
14 1
R404
T401
R401
W403
W406
W404
W501
W511
W502
W504
W505
W506
W503
W507
13
46
1
11
12
22 23
33
34
44
EBC
EBC
R504
X501
E
B
G
IO
E
12
B
C511
R515
R514
R512
R511
C501
C502
R516
R517
R518
VOLUME
R520
R533
R535
R548
R547
R546
R545
R544
R543
R542
R541
R540
R539
R538
R537
R536
IC402
IC501
Q501
D408
Q401
Q402
D401
D402
D404
D405
D406 D407
D409
D503
S501
S502
S503 S504 S505
S506
S507 S508
S509
S510
S512
S513 S514
S515
WH401
S401
E502
ED501
P401
D403
CN402
CN403 CN404
IC401
E401
CN405
CN406
E503
CN502
A501
CN501
S516
WH501
S511
D501
CN503
WH502
X14 B/4
X14 D/4
X14-7492-70 A/4 (J70-1594-11)
X14 C/4
Refer to the schematic diagram for the value of resistors and capacitors.
PC BOARD(Component side view)
19 20

KLNPRTMOQS
2
1
3
5
7
4
6
32.768kHz
8.388MHz
4.332MHz
16.9344MHz
LD
RF
Vc
Vcc
+R
R262
C667
W51
C121
W262
R58
W61
R57
C122
R134
W228
W52
W225
W224
C203
C205
W160
C221
W128
W167
C240
C245
C269
C285
C291
C299
C628
C632
C704
C707
C708
C808
C901
W217
R238
R268
R287
R299
R630
R700
R701
R710
W216
R774
R786
R787
R788
R291
C663
C733
W153
W64
W78
W77
R53
C102
R51
R52
C25
R756
R763
R35
C50
W122
W111
W110
W109
W112
W1
C30
R41
C34
C35
C36
R45
C8
C7
C9
C10
W57
C18 C17
W95
W138
C241
C254
C286
C702
C709
C710
C711
C712
C713
C714
C715 C716
C717
C718
C801
C21
W82
C32 C33
R1
R2
W58
W59
R7
R8
R30
R709
R44
R775
R783
R785
X701
C1
C2
C3
C4
C6
C5
C19
C20
C22
W12
C271
C272
C275
C276
C601
C602
C603
C604
C617
C618
C619
C620
C621
C622
C623
C624
C625
C626
C701
K1
R3
R4
L201
R5
R6
R12
R11
W44
W42
W46
R19
R20
R21
R22
R26
R27
R28
R29
R31
R32
R33
R34
R43
R46
R47
R217
W85
R228
W142
R290
R705
W68
R731
R734
R737
R741
R803
X221
X702
X801
W26
W24
W141
W209
W87
W150
W163
W62
W168
W143
W161
W179
W186
W188
W182
W183
C720
R732
C502
C501
R502
R501
114
W200
W191
W194
W201
W199
W139
W129
C743
W56
W148
W145
W99
W156
W162
W177
W166
W79
W101
W2
W72
W74
W73
W131
W90
W94
W223
W212
W132
W116
W92
W89
W127
W124
W135
W71
W205
W151
W215
W134
W126
W211
W220
C210
W219
W106
R101
R109R110
C101
R102
R103
R104
R105
R106
R107
R108
C27
C26
R111
R112
R113
R114
R127
R128
W14
W107
C118
C104
C103
W8
W32
W22
C111
C112
C109
C110
W5
OG
E
BEBE
BEBEBEB I
C113
C114
C31
C116
W84
W184
W130
W118
W19
W20
C117
W83
W17
W214
W9
W6
W226
W39
W175
W50
W176
W37
W40
W208
C24
C23
W210
W165
W154 W158
W187
W45
W41
W125
W86
W18
W16
W21
W70
W15
W80
W69
W31
W48
W60
W53
W55
W3
C115
W38
W28
W120
W29
W27
W81
W11
W102
W103
W35
W172
W173
W174
W170
W66
W67
W197
W157
W155
W104
W105
W65
W100
W97
W91
W146
W178
W98
W34
W76
W43
W113
W114
W115
W33
W221
C56
W119
W198
W96
W222
W218
W181
W140
W25
W123
W164
W171
W203
W149
W159
W185
W189
W207
W190
W10
W23
W152
W169
W147
W133
W137
W144
W136
W196
W192
W193
W195
W204
W180
W206
W202
W49
W47
C54
W121
W36
C52
C51
W30
W13
R55
R54
R56
C53
W54
W63
W88
W213
W108
W117
W4
W7
C55
C206
VR1
VR2
R133
-R -L +L
CD
W75
EB
BE
E
EB
EB
EB
B
BE
E
B
B
E
X8
X8
X8
X2
C211
C212
C215
C222
C238
C239
C246
C247
C248
C251
C252
C263 C264
C283
C284
C290
C803
C805
R221
R230
R231
R233
R240
R245
R247
R248
R253
R269
R285
R294
R631
R703
C721
R789
R804
R901
R902
R270
R280
R725
R726
R727
R728
R749
R760
R764
R770
R792
C631
C634
C11
C12
C232
C233
C234
C235
C242
C243
C255
C256
C257
C258
C259
C261
C262
C279
C280
C281
C282
C610
C615
C616
C627
C635 C636
C650
C705
C706
C806
C807
W258
R235
R286
R296
R606
R607
R608
R609
R612
R613
R702
R712
R742
R751
R753
R776
R778
R781
R782
R784
R801
C15
C16
C213
C214
C223
C231
C244
C250
C253
C273
C274
C277
C278
C605
C606
C607
C608
C611
C612 C613
C614
C802
C804
R14
R13 R15
R16
R17
R18
R23
R201
R202
R203
R204
R205
R206
R211
R212
R213
R214
R215
R216
R218
R222
R223
R224
R227
R229
R232
R234
R236
R237
R241
R242
R243
R250
R251 R252
R254
R255
R256
R257
R258
R259
R260
R261
R277
R263
R264
R265
R266
R267
R271
R272
R273
R274
R275
R276
R281
R282
R295
R297
R603
R604
R605
R610
R611
R706
R743
R708
R711
R713
R714
R715
R717
R718
R719
R720
R721
R722
R723
R724
R729
R730
R733
R735
R736
R738
R744
R746
R747
R748
R750
R752
R754
R757
R759
R761
R762
R765
R766
R767
R768
C123
R773
R777
R779
R780
R790
R791
R793
R802
R246
C260
R739
R503
R504
R210
C225
C106
C105
L1
C227
C228
C229
C230
C236
R755
R249
R225
R226
R209
R116
R115
R118
R120
C249
C224
R119
R117
R132
R131
R122
R124
R123
R121
R129
R130
R208
R49
R48
R745
R740
C664
C666
C665
W259
C204
C202
W261
C719
W252
W251
C265
W253
W254
TH1
16 9
81
41
85
61
60
41
40
21 20
1
80
116
1732
118
1936
60
61
80 1
20
21
40
41
113
14
26
85
41
EEB
CCB
CCE
E
41
41
1
31
1
171
1
91
6
51
162
151
162
3
11
210
23 1
22 2
BB
BEE
BCC
BEE
CBC
BEE
CBC
BBE
CEC
CC
EBB
E
BBE
CEC
H5
T2 T2
T4
EB EB
OG I
EB
EB
EB
EB
EB
EB
EB
EB
D702
IC21
IC22
IC23
IC24
IC601
IC701
IC801
IC901
Q206
Q204
Q207
Q701
Q702
Q201
Q106
Q105
Q104
Q103
Q203
Q107
Q102
Q101
Q209
Q208
Q52
Q202
IC23
WH201
E1
WH201
IC26
IC702
Q205
A601
D106
CN2
D5
D3
D4
Q10
D1
D7
D10
D12
D14
D201
D701
J601
D2
D11
D50
Q1
Q2
Q13
Q14
LR
INPUT
AUX
OPTICAL
DIGITAL OUT
SPEAKERS
D13
D15
D16
Q5
Q12
Q112
Q111
Q114 Q113 IC101
Q110
IC501
D501
Q109
D210
D101
D102
D103
D704
D104
D105
J1
D705
D706
D707
D262
Q51
CN21
CN23
CN72
CN73
CN22
CN26
CN11
P701
IC25
E2
E4
E3
E5
X29-2842-70 (J70-1577-21)
CN71
PHONES
U.COM
AMP
J2
E.VOL
Refer to the schematic diagram for the value of resistors and capacitors.
PC BOARD(Component side view)
21 22