Kenwood RXDM-55 Service manual

70%

MICRO HI-FI COMPONENT SYSTEM

RXD-M55-H/M55-N/M55-S RXD-M55E-H/M55E-N/M55E-S

SERVICE MANUAL

Front glass * (B10-)

Cassette lid * (A53-)

Knob * (K29-)

Panel ass'y * (A60-)

In compliance with Federal Regulations, following are reproduction of labels on, or inside the product relating to laser product safety.

Miniature Phone jack (E11-0399-05)

* Refer to parts list on page 25.

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.

RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S

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)

1 Remove the CD from the unit. 2 Press the CD 6 key.

3 Wait for some time and verify that the display

appears as above.

4 Wait a few seconds and turn the unit OFF.

Note related to transportation and movement

Before transporting or moving this unit, carry out the following operations.

Operation to reset

The microcomputer may fall into malfunction (impossibility 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 condition.

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.

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.

CONTENTS / ACCESSORIES / CAUTIONS

CONTENTS / ACCESSORIES .................................. 2

EXTERNAL VIEW .......................................................3

DISASSEMBLY FOR REPAIR....................................4

BLOCK DIAGRAM ......................................................5

CIRCUIT DESCRIPTION ............................................6

ADJUSTMENT ..........................................................16

Accessories

WIRING DIAGRAM ...................................................18

PC BOARD ...............................................................19

SCHEMATIC DIAGRAM ...........................................24

EXPLODED VIEW ....................................................33

PARTS LIST..............................................................35

SPECIFICATIONS ......................................Back cover

Cautions

DIGITAL

OUT

OPTICAL

AUX INPUT

GND

ANTENNA

FRONT

SPEAKERS

(6-16

Ω)

FM 75

Ω

Metallic cabinet * (A01-)

RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S

EXTERNAL VIEW

Tuner ass'y * (W02-)

Lock terminal board * (E70-)

Pin jack (E63-1264-05)

Oscillating module (W02-1114-15)

AC power cord bushing (J42-)

AC power cord * (E30-)

* Refer to parts list on page 25.

RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S

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.

AM 0dB=180mV

FM 0dB=600mV:75kDEV.

0dB=1.2V:1kHz

580mV

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

A.OUT

PB AMP

REC AMP

VR1.2

PLL DO SA CE

SA DATA

SA CLK SD

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

SL DF

SL DR

SP DR

SP DF

TR KR

TR KF A

FC SR

FC SF

LDC

DATA

CLK

A.MUTE ON/STANDBY

-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

L1,2

+9.0V

0dB

CASSETTE DECK

TUNER

FLAT

TAPE REC

TAPE PLAY

AUX IN

E.VOL

INPUT

VOL.

AMP

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

ED501

4ch DRIVER

IC23

RF-AMP

AN8399SA-E1

IC21

CD MECHA

X29,Q111-114

POWER AMP

PROTECTION

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

HEAD-

OUT

PHONE

REC OUT

BIAS ADJ.

Q15-18

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

BLOCK DIAGRAM

RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S

CIRCUIT DESCRIPTION

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

Set Destination Band Receiving Frequency Range

K/P K1

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

M/V K2

FM 87.5MHz~108.0MHz 100kHz +10.7MHz 25kHz AM 530kHz~1700kHz 10kHz +450kHz 10kHz

FM 87.5MHz~108.0MHz 50kHz +10.7MHz 25kHz AM 531kHz~1602kHz 9kHz +450kHz 9kHz FM 87.5MHz~108.0MHz 100kHz +10.7MHz 25kHz AM 530kHz~1610kHz 10kHz +450kHz 10kHz

Channel

Space

IF RF

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

✽ Pin 3 of microcomputer (X29, IC701).

3. Tuner Preset Frequency

Frequency Frequency

P.CH

K1(K,P TYPE) K2(M,V TYPE)

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

E1/E3 P.CH

(E,E2,T,H,M,V,X) (E,E2,T,H,M,V,X)

K1(K,P TYPE) K2(M,V TYPE)

E1/E3

RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S

CIRCUIT DESCRIPTION

4. Test Mode

4-1 Setting method of the Test 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.

✽ 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

Keys Display Operation

CD-PLAY/PAUSE 05

(Cyclically changed the mode (✽ ✽ : ✽ ✽)Time Display • Pickup moves inward.

05 and 03 by pressing the key.) 03

(✽ ✽ : ✽ ✽)Time Display • Pickup moves outward.

CD STOP 00 : 00 Stop the CD operation.

(Cyclically changed in the 07 FG/FE FG value /FE value

stop mode only.) 08 FB/FO FBAL value /FO 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.

✽ ✽ : ✽ ✽ • Tracking-servo on.

✽ ✽ : ✽ ✽ • Tracking-servo off. (for checking TE)

Adjustment value/mean value

09 TG/TE TG value /TE value 10 TB/TO TBAL value /TO value

4-5 Deck Test Mode

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.

✽ Mechanism half switches indication

The mechanism half switches status are indicated "blank" or "E" in the display.

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

RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S

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)

CIRCUIT DESCRIPTION

5. Microcomputer : MN101C51FGB(X29,IC701)

5-1 Microcomputer Periphery Block Diagram

Key Matrix VREF =5.0V

Voltage

Range

Key 1 ON/

(Pin 5) STANDBY DOWN PLAY UP OPEN

Key 2

(Pin 6) PLAY

0 0.89 1.55 2.00 2.61 3.02 3.47 3.95 5.00

AUX TUNER

REC SET MODE O.T.E.

SKIP

STOP

TAPE

CD SKIP CD

REPEAT SOUND (off)

(off)

RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S

CIRCUIT DESCRIPTION

5-2 Port Description of Microcomputer

Pin No. Pin Name I/O Pin Description

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.

Active

RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S

CIRCUIT DESCRIPTION

Pin No. Pin Name I/O Pin Description

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.

Active

6. Description of ICs

6-1 DSP IC : MN6627482WB(X29, IC22)

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.

RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S

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

CIRCUIT DESCRIPTION

6-2 Channel BTL Driver : AN4801SB-E1(X29, IC23)

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.

6-3 CD Motor Driver : TA8409S (X29, IC26)

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.

Function

INPUT OUTPUT MODE

IN 1 IN 2 OUT 1 OUT 2 MOTOR

1 0 H L CW/CCW

0 1 L H CCW/CW

1 1 L L BRAKE

: High Impedance

∞

Note) Input : "H" Active

∞∞

STOP

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