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K-505TX

Ref. No . 

3675

SERVICE MANUAL

STEREO

CASETTE DECK

MODEL K-505TX

R

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK       ON THE

CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
REPLACE THESE COMPONENTS WITH ONKYO
PARTS WHOSE PART NUMBER APPEAR AS SHOWN
IN THIS MANUAL.

MAKE LEAKAGE CURRENT OR RESISTANCE
MEASUREMENTS TO DETERMINE THAT EXPOSED
PARTS ARE ACCEPTABLY INSULATED FROM THE
SUPPLY CIRCUIT BEFORE RETURNING THE
APPLIANCE TO THE CUSTOMER.

SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE

STEREO CASSETTE TAPE DECK

CASSETTE LOADING MECHANISM

STANDBY / ON

STANDBY

ALBUM

FADE

DOLBY NR

REV. MODE

COUNTER RESET

REC LEVEL

K- 

505X

 SUPP,SUPT

     SUDT

 Silver models

230V AC,50Hz

120V AC,60Hz

052001

Summary of Contents for K-505TX

Page 1: ...APPEAR AS SHOWN IN THIS MANUAL MAKE LEAKAGE CURRENT OR RESISTANCE MEASUREMENTS TO DETERMINE THAT EXPOSED PARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT BEFORE RETURNING THE APPLIANCE TO THE C...

Page 2: ...REC PB Special Hard Permalloy 1 Erase head Ferrite 1 Power supply rating AC 230 240 V 50 Hz AC 120 V 60 Hz Power consumption 12 W 230 240 V 50 Hz 14 W 120 V 60 Hz Dimensions 205 mm 76 mm 278 mm Width...

Page 3: ...ECHA AND DRIVER TAPE SPEED R716 S717 AUTO ADJUSTMENT START KEY MICROPROCESSOR Q701 Q905 5V for MICROPROCESSOR Q901 Q903 Q906 12V for SIGNAL 12V for MECHA 22V for F L TUBE D901 D902 T901 D905 D906 POWE...

Page 4: ...U1 U2 P101 T901 U3 U5 Z001 P705 P702 P902A U6 U4 P703 EXPLODED VIEW F901 K 505TX...

Page 5: ...ocket AS P705 204319013 NCFC3 19013 F F C P902A 253193HIT AS CEE Power supply cord P 253277MIL AS UC 2 18 Poewr supply cord D T901 2301298 NPT 1314P Power transformer P 2301297 NPT 1314D Power transfo...

Page 6: ...Control circuit PC board 4 FR24S 11 Flywheel ass y 5 F513 870 Recording Play head 6 F514 129 Pinch roller R 7 F514 130 Pinch roller L 8 F522 048 Clutch Flywheel 9 F522 052 Clutch 10 F525 327 Main moto...

Page 7: ...55 F P701 25045330 NPJ 2PDBL184 Diodes P702A 25055157 NPLG 13P141 D701 D703 223163 or 1SS133 or P703A 25055149 NPLG 5P133 D706 223205 1SS270A P704B 25055444 NPLG 6P426 D702 224470472 MTZJ4 7B Heat sin...

Page 8: ...A 0 V0 C233 C237 354780479 C238 354780109 POWER TRANSFORMER PC BOARD NAPS 7150 1A 1B C239 C240 374721044 Capacitors C241 C242 354741009 C901 C902 374721044 ECQ V50V 104J C243 391941027 Sockets C246 37...

Page 9: ...ode Output indicator Adjustme nt point Adjustment Remarks 1 Tape speed Frequency counter to P205 or LINE OUT terminal MTT 111N PB Frequency counter R716 3010Hz 2 Head azimuth AC voltmeter oscilloscope...

Page 10: ...CAF 7148 25137148 NCAF 7147 25137147 0 0 RCH LCH LCH RCH R115 R116 P205 ONKYO ONKYO MAIN CIRCUIT PC BOARD PLAYBACK AMP PC BOARD DOLBY CIRCUIT PC BOARD RECORDING AMP PC BOARD ADJUSTMENT POINT K 505TX R...

Page 11: ...NSW CLOSESW RIOUT RIIN TC2 PPG DVOA INT2 INT1 SCK SI SO CS STB TEST VSS XIN XOUT RESET XTIN XTOUT INTO G10 G11 G12 G13 G14 G15 VDD VAREF VASS K1 K2 K3 K4 G9 G8 S0 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S1...

Page 12: ...Active low 15 I POFF Power failure port 47 O 70 120 Tape select port 16 I PRECINHSW Cassette pack detect 48 O REC PB Mode select port 17 I METALSW Metal switch detect 49 O BIAS Bias select Low when m...

Page 13: ...37 2010376 Pin cord AS 38 2010375 3 5 MINI PLUG Cord AS 39 29100180 T0 05 D240 W250 Bag 40 29053741 Carton 41 29362845 EAN Label 43 29343076 E K505TX Instruction manual 29343077 U3FSI K505TX Instructi...

Page 14: ...831 8111 Fax 072 833 5222 ONKYO EUROPE ELECTRONICS GmbH Industriestrasse 20 82110 Germering GERMANY Tel 089 849 320 Fax 089 849 3265 E mail info onkyo de ONKYO CHINA LIMITED Units 2102 2107 Metroplaza...

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