Pioneer DEH-M7317ZH Service Manual Download Page 8

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DEH-M7317ZH

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 BLOCK DIAGRAM

Q511

Q505

Q503

Q501

Q504

Q509

IC 401

PM4009A

IC 603

HA12187FP

X401

RDS
DECODER

IP-BUS DRIVER

MUTE

XOUT

XIN

BL+B

CDLOAD

clamp

PEE1

CDEJET

CONT

EJTSNS

DSCSNS

CD5VON

VDCONT

BLPOW

SYSTEM

-COM

IC 601(2/2)

PD5739A

ANT501

VDD

B U

VDD

VCC

ANT

FO +

TO +

FO +

TO +

X201

S801
HOME

S802

CLAMP

CDLOAD

CDEJET

CONT

EJTSNS

DSCSNS

CD5VON

V+5

FD/TD/SD/MD

PSW

LOUT

FOP

TOP

SOP

MUTE

SOM

COP

COM

LOP

LOM

LOUT

D802

DISC SENSE

EJECT

SENSE

MOTOR

CARRIAGE

MOTOR

SPINDLE

MOTOR

D801

28 CDEJET

CD5VON

CDLOAD

LD +

HOLOGRAM

UNIT

FOCUS ACT

TRACKING ACT

IC 501

S-81250PGPD

POWER ON MUTE

IC 201

UPD63711GC

IC 301

BA5985FM

CD DRIVER

RF-AMP,SERVO,DSP,DAC

CN701

CN802

CN801

CN101

5V REGULATOR

IC 701

BA05SFP

PICKUP UNIT(SERVICE)(P8)

BUS—

BUS+

BUS+L

BUS—L

IPDO

IPDI

IPPW

swvdd

VDD

CN601

Q853

Q854

Q806

Q805

TUNER AMP UNIT

CONTROL UNIT

PHOTO UNIT

TEMP

X602

TH601

(S8)

VDD

SWDACC

TUN L

BUS+L

BUS—L

CD L

Q101

Q807

Q851

PEE2

VDD

antled

Q607

VDD

discind

syspw

ANTPW

Q604

CN901

IC 3

EEPROM

FM/AM TUNER UNIT

FM/AM 1ST IF 10.7MHz

T51 Q51 CF51 CF52 CF53

IC1

MIXER, IF AMP, DET.

LDET

COMP

12 15 16

CF202

VDD

VCC

DI/DO

CE2

CE1

SDBW

FMSD

NL1

NL2

IC 2 FM MPX

AMANT

FMANT

ATT

AMRF

FMRF

RF ADJ

ANT2 ADJ

X901

10.25MHz

ANT1 ADJ

LOCL

LOCH

AMDET

MPXREF 41kHz

AM 2ND IF

450kHz

CREQ

DGND

STIND

L ch

R ch

FMLOCL

RFGND

Summary of Contents for DEH-M7317ZH

Page 1: ...HONDA PART No ID No PIONEER MODEL No S2000 EUROPE August 2001 39101 S2A G210 M1 3YA1 DEH M7317ZH EW This service manual should be used together with the following manual s Model No Order No Mech Module Remarks CX 958 CRT2423 S8 1 CD Mech Module Circuit Description Mech Description Disassembly CONTENTS 1 SAFETY INFORMATION 2 2 EXPLODED VIEWS AND PARTS LIST 4 3 BLOCK DIAGRAM AND SCHEMATIC DIAGRAM 8 ...

Page 2: ... by this manual Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty If you are not qualified to perform the repair of this product properly and safely you should not risk trying to do so and refer the repair to a qualified service technician 1 Safety Precautions for those who Service this Unit When checking or adjusting the emitting...

Page 3: ...3 DEH M7317ZH ...

Page 4: ...4 DEH M7317ZH 2 1 EXTERIOR 2 EXPLODED VIEWS AND PARTS LIST ...

Page 5: ... Chassis Unit CXB6229 37 Connector CNV6163 38 Connector CNV6293 39 Screw ISS26P060FMC 40 Knob Assy CXB8232 41 Grille Assy CXB8162 42 LCD LCD951 CAW1708 43 Keyboard Unit CWM8000 44 Conductor CNC9043 45 Socket CN951 CKS3551 46 Button CD AUX CAC6827 47 Button L M U CAC6829 48 Button CAC6830 49 Button SEEK SKIP CAC6831 50 Button EJECT CAC6838 51 Screw ISS26P055FUC 52 Button TA PTY NEWS CAC6888 53 Butt...

Page 6: ...6 DEH M7317ZH 2 2 CD MECHANISM MODULE ...

Page 7: ...63 41 Bracket CNC8567 42 43 Spacer CNM3315 44 Sheet CNM6659 45 46 47 Ball CNR1189 48 Belt CNT1086 49 Roller CNV4509 50 Arm CNV6037 51 Arm CNV5247 52 Arm CNV5248 53 Arm CNV5249 54 Guide CNV5254 55 Guide CNV5255 56 Gear CNV5257 57 Gear CNV5256 58 Guide CNV6272 59 Damper CNV5266 60 Arm CNV6096 61 Arm CNV6031 62 Arm CNV6853 63 Guide CNV6012 64 Guide CNV5510 65 66 Guide CNV5751 67 Clamper CNV6013 68 Ge...

Page 8: ...CDLOAD LD MD MD LD 2 1 HOLOGRAM UNIT FOCUS ACT TRACKING ACT IC 501 S 81250PGPD POWER ON MUTE IC 201 UPD63711GC IC 301 BA5985FM CD DRIVER RF AMP SERVO DSP DAC CN701 CN802 CN801 CN101 5V REGULATOR IC 701 BA05SFP PICKUP UNIT SERVICE P8 BUS BUS BUS L BUS L 1 2 8 6 5 IPDO IPDI IPPW swvdd BU VDD BU CN601 BU Q853 Q854 Q806 Q805 A TUNER AMP UNIT C CONTROL UNIT D PHOTO UNIT 13 TEMP 92 X602 TH601 15 17 4 19...

Page 9: ...602 S 80735ANDZI IC 901 TDA7384 reset VDD Q804 Q602 SYSPW DOUT DIN IPPW ELECTRONIC VOLUME SOURCE SELECTOR BU VDD STBY MUTE IC 951 LC75883EHS LCD DRIVER KEY MATRIX LCD 16 1 13 1 16 4 KEY DATA LCD DATA VDD 70 CN602 CN951 Q859 Q860 Q609 KEYBOARD UNIT 2 ACC Q603 VST VCK VDT TUN L L L Q901 IC 301 BA4560F IC 302 BA4560F 3 2 1 7 5 ANTLED VDD 9 8 Q610 Q607 Q608 11 6 ANTI IND DISC IND Q611 VDD 1 2VCC BU Q8...

Page 10: ...TOR 9V 5V CD MECHANISM MODULE S8 1H 8V60mA 14V40mA 14V40mA 14V40mA 14V40mA 14V40mA A B A a 3 2 OVERALL CONNECTION DIAGRAM GUIDE PAGE Note When ordering service parts be sure to refer to EXPLODED VIEWS AND PARTS LIST or ELECTRICAL PARTS LIST A a A b A a A a A b A b A b A b A a A a Large size SCH diagram Guide page Detailed page ...

Page 11: ... 7 8 D C B A 5 0dBs 8 0dBs 9 4dBs FM 6 0dBs AM 9 0dBs CD 8 4dBs SYSTEM CONTROLLER ILL BACK LIGHT GA NET FM 20dBs AM 17dBs CD 34 4dBs 5V 8 5V REGULATOR REGULATOR BACKUP SENSE ACC SENSE POWER AMP A TUNER AMP UNIT 9V 13 2V 5V A A b ...

Page 12: ...12 DEH M7317ZH 1 2 3 4 1 2 3 4 D C B A FM 26 0dBs AM 29 0dBs FM 5 0dBs AM 8 0dBs CD 9 4dBs C E VOL SOURCE SELECTOR 9V 5V CD MECHANISM MODULE S8 1H A a A a A b 1 2 3 4 ...

Page 13: ...13 DEH M7317ZH 5 6 7 8 5 6 7 8 D C B A 4 4dBs B KEYBOARD UNIT SYSTE LCD DRIVER 8V60mA 14V40mA 14V40mA 14V40mA 14V40mA 14V40mA A a A a A b B 5 6 ...

Page 14: ...14 DEH M7317ZH 1 2 3 4 1 2 3 4 D C B A 5 0dBs M 8 0dBs 9 4dBs FM 6 0dBs AM 9 0dBs CD 8 4dBs 5V 8 5V REGULATOR REGULATOR POWER AMP A TUNER AMP UNIT 5V A a A b A b 1 2 3 4 ...

Page 15: ...15 DEH M7317ZH 5 6 7 8 5 6 7 8 D C B A SYSTEM CONTROLLER ILL BACK LIGHT GA NET FM 20dBs AM 17dBs CD 34 4dBs 5V BACKUP SENSE ACC SENSE 9V 13 2V A b A a A b 5 6 ...

Page 16: ...M MODULE BA05SFP SERVICE P8 PICKUP UNIT PHOTO UNIT S8 CL203IRXTU CL203IRXTU CONTROL UNIT SPINDLE MOTOR Q2 CPT230SX TU Q1 CPT230SX TU M3 CXB2562 CARRIAGE MOTOR M1 CXB2190 M2 CXB2195 LOADING MOTOR RF AMP SERVO 5V REGULATOR CD DRIVER CN101 CN802 CN801 C D D C ...

Page 17: ...17 DEH M7317ZH 5 6 7 8 5 6 7 8 D C B A AMP SERVO DSP DAC LPF SWITCHES CONTROL UNIT S801 HOME SWITCH ON OFF S802 CLAMP SWITCH ON OFF The underlined indicates the switch position CN701 16 934MHz C A CN601 ...

Page 18: ...iv 9 CH2 TD 0 5V div Test mode 32 tracks jump FWD 0 5ms div 8 CH1 TE 0 5V div 9 CH2 TD 0 5V div Test mode Single jump FWD 0 5ms div 8 CH1 TE 0 5V div 9 CH2 TD 0 5V div Test mode 100 tracks jump FWD 5ms div 6 CH1 FE 0 1V div 3 CH2 FD 0 2V div Normal mode Play 20ms div 3 CH1 FD 0 5V div 0 CH2 MD 1V div Normal mode Focus close 12cm 0 5s div 3 CH1 FD 0 5V div 0 CH2 MD 1V div Normal mode Focus close 8c...

Page 19: ...mode play 8 CH1 TE 1V div CH2 TEC 1V div Test mode Focus close Tracking open 2ms div 8 CH1 TE 0 5V div 6 CH2 FE 0 5V div Normal mode AGC after focus close 0 2s div PLCK 2V div 0 5µs div Normal mode play 20ms div SCKO 2V div 1µs div Normal mode play Dout 2V div 10µs div Normal mode play LRCK 2V div 20µs div Normal mode play VD 5V div 50ms div Normal mode No disc GND REFO REFO GND REFO REFO REFO REF...

Page 20: ...5V div Normal mode During AGC 1 CH1 RFI 1V div CH2 HOLD 5V div Normal mode The defect part passes 800µm B D 0 2ms div 1ms div 0 5ms div 3 CH1 FD 0 5V div CH2 HOLD 5V div Normal mode The defect part passes 800µm B D 0 5ms div 9 CH1 TD 0 1V div CH2 HOLD 5V div Normal mode The defect part passes 800µm B D 0 5ms div REFO REFO REFO REFO REFO REFO REFO REFO REFO REFO REFO REFO ...

Page 21: ...21 DEH M7317ZH ...

Page 22: ... 1 TUNER AMP UNIT NOTE FOR PCB DIAGRAMS 1 The parts mounted on this PCB include all necessary parts for several destination For further information for respective destinations be sure to check with the schematic dia gram 2 Viewpoint of PCB diagrams Capacitor Connector P C Board Chip Part SIDE A SIDE B ...

Page 23: ...23 DEH M7317ZH 5 6 7 8 5 6 7 8 D C B A TESTA PCLA ANTENNA FM AM TUNER UNIT FRONT A SIDE A ...

Page 24: ...24 DEH M7317ZH 1 2 3 4 1 2 3 4 D C B A A A TUNER AMP UNIT ...

Page 25: ...25 DEH M7317ZH 5 6 7 8 5 6 7 8 D C B A A SIDE B ...

Page 26: ...26 DEH M7317ZH 1 2 3 4 1 2 3 4 D C B A 4 2 KEYBOARD UNIT CD EJECT VOL POWER SEEK SKIP SEEK SKIP SCAN RPT ASEL RDM 1 2 3 4 5 6 CLOCK PTY NEWS TA CD AUX L M U TUNE MODE B KEYBOARD UNIT B SIDE A ...

Page 27: ...27 DEH M7317ZH 1 2 3 4 1 2 3 4 D C B A A CN602 B KEYBOARD UNIT B SIDE B ...

Page 28: ...DEH M7317ZH 1 2 3 4 1 2 3 4 D C B A 4 3 CD MECHANISM MODULE HOME M3 SPINDLE MOTOR M1 CARRIAGE MOTOR M2 LOADING MOTOR A CN601 PICKUP UNIT SERVICE P8 C CONTROL UNIT SIDE A D PHOTO UNIT S8 3 2 1 D C CN802 D C ...

Page 29: ...29 DEH M7317ZH 1 2 3 4 D C B A 1 2 3 4 CLAMP C SIDE B C CONTROL UNIT ...

Page 30: ...803 Transistor 2SC4081 Q 804 Transistor 2SD1859 Q 805 Transistor 2SD2396 Q 806 Transistor 2SA1576 Q 807 Transistor 2SC4081 Q 851 Transistor 2SD1859 Q 853 Transistor 2SA1576 Q 854 Transistor 2SC4081 Q 859 Transistor 2SB1236 Q 860 Transistor 2SC4081 Q 901 Transistor DTC114EU Q 902 Transistor 2SC4081 Q 903 Transistor DTC114EU Q 904 Transistor 2SC4081 D 101 Diode 1SS133 D 301 Diode HZS6L A1 D 501 Diod...

Page 31: ... 505 RS1 16S473J R 506 RS1 16S681J R 507 RS1 16S153J R 508 RS1 16S474J R 509 RS1 16S681J R 510 RS1 16S224J R 511 RS1 16S162J R 512 RS1 16S162J R 513 RS1 16S332J R 514 RS1 16S332J R 515 RS1 16S104J R 516 RS1 16S104J R 517 RS1 16S222J R 518 RS1 16S222J R 519 RS1 16S223J R 520 RS1 16S223J R 521 RS1 16S224J R 522 RS1 16S224J R 523 RS1 16S472J R 524 RS1 16S473J R 525 RS1 16S102J R 526 RS1 16S473J R 527...

Page 32: ...EALNP4R7M16 C 214 CEALNP4R7M16 C 215 CEAL1R5M50 C 216 CEAL1R5M50 C 217 CKSRYB332K50 C 218 CKSRYB332K50 C 219 CEALNP4R7M16 C 220 CEALNP4R7M16 C 221 CKSRYB153K25 C 222 CKSRYB153K25 C 223 CKSRYB104K16 C 224 CKSRYB104K16 C 225 CKSRYB224K10 C 226 CKSRYB224K10 C 227 CEALNP4R7M16 C 228 CEALNP4R7M16 C 229 CEAL4R7M35 C 230 CEAL2R2M50 C 233 CEALNP4R7M16 C 234 CEALNP4R7M16 C 235 CCSRCH221J50 C 236 CCSRCH221J...

Page 33: ...0 C 925 CKSRYB474K10 C 926 CKSRYB474K10 C 927 CKSRYB474K10 C 928 CKSRYB474K10 C 929 CEAL4R7M35 Unit Number CWX2411 Unit Name Control Unit MISCELLANEOUS IC 201 IC UPD63711GC IC 301 IC BA5985FM IC 701 IC BA05SFP Q 101 Transistor 2SB1132 D 801 Chip LED CL203IRXTU D 802 Chip LED CL203IRXTU X 201 Ceramic Resonator 16 934MHz CSS1456 S 801 Spring Switch HOME CSN1051 S 802 Spring Switch CLAMP CSN1052 RESI...

Page 34: ...SD1054 IL 951 Lamp 8V 60mA CEL1704 IL 953 Lamp 14V 40mA CEL1692 IL 954 Lamp 14V 40mA CEL1692 IL 955 Lamp 14V 40mA CEL1692 IL 956 Lamp 14V 40mA CEL1692 IL 957 Lamp 14V 40mA CEL1692 LCD 951 LCD CAW1708 RESISTORS R 951 RS1 10S683J R 953 RS1 16S103J R 954 RS1 16S103J R 955 RS1 16S103J R 956 RS1 16S103J R 957 RS1 10S221J R 958 RS1 10S561J R 960 RS1 16S103J R 961 RS1 16S103J R 962 RS1 16S103J R 963 RS1 ...

Page 35: ...stabi lize Since the protective systems in the unit s software are rendered inoperative in test mode be very careful to avoid mechanical and or electrical shocks to the sys tem when making adjustment Disc detection during loading and eject operations is performed by means of a photo transistor in this unit Consequently if the inside of the unit is exposed to a strong light source when the outer ca...

Page 36: ... AGC F T RF AGC Focus open Jump off Focus Mode select Tracking Close CRG TR Jump switching CRG TR Jump Toward inner perimeter r SEC MIN TRK 00 00 SEC 00 MIN TRK 99 99 SEC 99 MIN TRK SEC 2 MIN TRK 91 91 SEC 91 MIN TRK 0X 0X SEC 0X MIN TRK 00 00 SEC 00 MIN TRK 99 99 SEC 99 or MIN TRK 00 00 SEC 00 MIN TRK 99 99 SEC 99 or MIN TRK 00 00 SEC 00 MIN TRK 99 99 SEC 99 3 3 2 Auto Adjustment Display Select 4...

Page 37: ...it to the innermost track 3 Press key SCAN RPT to close focus the display should read 91 Press key 2 to implement the tracking balance adjustment the display should now read 81 Press key SCAN RPT 2 times The display will change returning to 81 on the fourth press 4 As shown in the diagram above monitor the LPF outputs using the oscilloscope and check that the phase differ ence is within 75 Refer t...

Page 38: ...38 DEH M7317ZH Grating waveform Ech Xch 20mV div AC Fch Ych 20mV div AC 45 0 75 60 30 90 ...

Page 39: ... 5V SIDE A CLOCK ADJUSTMENT No Adjustment Point Adjustment Method Switch Position 1 Switch ACC back up On 2 Apply 5V to TC601 Frequency Counter 312 5kHz 0 001kHz the test point TESTA Remarks The adjustment should be made when the ambient temperature is between 10 degrees C and 30 degrees C Connection Diagram ...

Page 40: ...ISC Focus error F2 Focusing not available Stains on rear side of disc or excessive vibrations on REWRITABLE Spindle not locked Sub code is strange not readable An appropriate RF AMP gain can t be determined Failure on spindle stains or damages on disc or excessive vibrations CD signal error A disc not containing CD R data is found Turned over disc are found though rarely AGC protection cannot be t...

Page 41: ...the CD Mechanism Module Fig 1 CD Mechanism Module Fig 2 Grille Assy Cushion Removing the Grille Assy Fig 2 The Cushion has been stuck onto the frame of the Grille Assy with double faced adhesive tape Remove the Cushion from the frame Remove the two screws Disconnect the six claws and then remove the Grille Assy 7 GENERAL INFORMATION 7 1 DIAGNOSIS 7 1 1 DISASSEMBLY ...

Page 42: ...ve the screw M3 x 6 Remove the two screws Remove the screw and then remove the Heat Sink Fig 3 Fig 4 Tuner Amp Unit Heat Sink Removing the Tuner Amp Unit Fig 4 Remove the screw Straight the tabs at three locations indicated Remove the two screws and then remove the Tuner Amp Unit ...

Page 43: ...ge and remove the mechanism from the one damper by driving it up aslant into front side direction Note When assembling the Carriage Mechanism coat the dampers with alcohol prior to the assembly Removing the Clamp Arm Assy 1 Remove a Spring A a B and a Spring C 2 Drive the Clamp Arm Assy up into rear side direction then disengage the arm from its current position Finally drive the assembly approxim...

Page 44: ...re must be exercised so that cord may be caught by the gear Removing the LO Arm Assy 1 Remove two Pins to dismount the LO Arm Assy Removing the Control Unit and the Spindle Motor 1 Remove from the connector after mounting the short pin on the flexible PCB of the pickup unit 2 Remove two Soldered joints then remove two Screws A 3 Remove two connectors and a Screw B 4 Disengage the Control Unit from...

Page 45: ...e the Belt a Screw B two Screws C a Guide and a Screw Unit 4 Dismount the Carriage Motor Note When assembling the Belt use care so that it may not be contaminated by grease Removing the Pickup Unit 1 Remove two Screws and a Shaft 2 Dismount the Pickup Unit Pickup Unit Shaft C Guide B Screw Unit Carriage Motor A A C Belt Loading Motor ...

Page 46: ...46 DEH M7317ZH 7 1 2 CONNECTOR FUNCTION DESCRIPTION ANTENNA JACK ...

Page 47: ...S 57kHz pulse count input 26 VOL UP I Encoder 1 input 27 VOL DOWN I Encoder 1 input 28 PEE2 O C Beep tone output 29 DIN I BUS data input 30 DOUT O BUS data output 31 XDSO O C CDS serial data output 32 XDSI I CDS serial data input 33 xdsck O C CDS serial clock output 34 discind O C DISC detect indicator 35 PDO O C Data output for PLL IC 36 PDI I Data input from PLL IC 37 pck O C Serial clock output...

Page 48: ...iver power supply control 80 VDCONT O C VD control output 81 LOCK I Spindle lock detector input 82 MIRR I Mirror detector input 83 FOK I FOK signal input 84 xstb O C Strobe output CD 85 XAO O C CD LSI data discernment control signal output 86 xrst O C CD LSI reset output 87 clamp I Disc clamp sense input 88 antled O C Anti theft indicator 89 REM I Remote control input Handle 90 DSCSNS I Disc detec...

Page 49: ...1 3 O LCD common output 59 64 KS1 6 O Key strobe output 65 69 KI1 5 I Key data input 70 VDD Power supply terminal 71 72 VDD1 2 LCD bias power supply 73 VSS GND 74 TEST Connect to VSS 75 OSC I O Oscillator terminal 76 res I Connect to VDD 77 DO O Data output 78 CE I Chip enable 79 CL I Clock input 80 DI I Data input LC75883EHS 24 25 40 41 64 65 80 1 ...

Page 50: ... up to the VDD at 47kΩ 16 CE1 I chip enable 1 AF RF chip enable Active at High To be grounded at 47kΩ 17 NC Not used 18 LDET O lock detector Active at Low To be pulled up to the VDD at 47kΩ 19 CREQ I current request Active at Low To be grounded at 47kΩ 20 NC Not used 21 COMP O composite signal FM composite signal output r out 100Ω 22 VCC power supply Analog section power supply pin DC 8 4V 0 3V 23...

Page 51: ...29 SEG28 SEG27 SEG26 SEG25 SEG24 SEG23 SEG22 SEG21 SEG20 SEG19 SEG18 SEG17 SEG16 SEG15 SEG14 SEG13 SEG12 SEG11 SEG10 SEG 9 SEG 8 SEG 7 SEG 6 SEG 5 SEG 4 SEG 3 SEG 2 SEG 1 SEG37 SEG38 SEG39 SEG40 SEG41 SEG42 SEG43 SEG44 SEG45 COM 1 COM 2 COM 3 COMMON SEGMENT 7 2 2 DISPLAY CAW1708 ...

Page 52: ...pw L 71pin YES PWR key ON IPPW H 22pin ASENBO H 69pin swvdd L 70pin asens 75pin bsens 74pin VDD 5V 16 62pin Backup ACC ON L L Starts communication with Grille microcomputer TUNER ON YES Waiting for anti theft code entry Enter a 5 digit code using numerical keys 1 to 6 Anti theft passed Identified with the correct code ...

Page 53: ...SPECIFICATIONS 8 1 OPERATIONS CD DOWN UP TRACK CLOCK POWER ON OFF VOLUME RANDOM PLAY CD EJECT REPEAT RADIO PRESET MEMORY TUNING BAND PTY NEWS TRAFFIC ANNOUNCEMENT DOWN UP SEEK POWER ON OFF VOLUME SEEK SCAN AUTO SELECT U1 U2 BAND CLOCK ...

Page 54: ...0 2 or less FM tuner Frequency range 87 5 108 0 MHz Usable sensitivity 12 dBf 6dB S N 30 dB Signal to noise ratio 45 dB stereo or more Distortion 1 3 or less Stereo separation 22 dB or more MW tuner Frequency range 531 1 602 kHz 9 kHz Usable sensitivity 27 dBµ 6 dB S N 20 dB Selectivity 56 dB or more Signal to noise ratio 40 dB or more Distortion 0 9 or less LW tuner Frequency range 153 281 kHz 9 ...

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