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See also:
Instruction Manual
SERVICE MANUAL
R
STEREO TUNER
MODEL T-405TX
FM STEREO TUNER
STANDBY/ ON
ACCUCLOCK
Silver models
SUPT
SUDT
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK
SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE
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.
PRESET
TIMER
MEMORY
FM MODE
CLEAR
TUNING
DISPLAY
CHARACTER
T-405TX
230V AC,50Hz
120V AC,60Hz
ON THE
T-405TX
3680
Ref. No .
052001
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Table of Contents
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Summary of Contents for Onkyo T-405TX
- Page 1 COMPONENTS IDENTIFIED BY MARK ON THE SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE 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...
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Page 2: Specifications
T-405TX SPECIFICATIONS T uning Range: T uning Range : 87.90 - 107.90 MHz, 200 kHz steps 530 - 1,710 kHz, 10 kHz steps (U.S. & Canadian models) Usable Sensitivity : 30 µV 87.50 - 108.00 MHz, 50 kHz steps Image Rejection Ratio : 30 dB... -
Page 3: Block Diagram
T-405TX BLOCK DIAGRAM L103 L101.L102 L.P.F Right FM IF Q105 TRANSFORMER MUTE SWITCH MIXER RF AMP ANTENNA Q103 TUNED Q107 TANK Q101.Q102 FM IF SYSTEM/MPX AND AM RADIO SYSTEM CIRCUIT GATE CIRCUIT FM IF AMP CIRCUIT LA1837 FM LOCAL Left... -
Page 4: Exploded View
T-405TX EXPLODED VIEW P901 T901 F901 REF.NO. PART NO. DESCRIPTION REF.NO. PART NO. DESCRIPTION NARF-6130-4C,Main circuit PC board ass'y <P> Chassis 1A907530-4C 27100337 NARF-6130-4D,Main circuit PC board ass'y <D> Front bracket 1A907530-4D 27111039B NADIS-6131-4C,Display PC board ass'y <P> Rear panel <P>... -
Page 5: Schematic Diagram
T-405TX SCHEMATIC DIAGRAM N A R F - 6 1 3 0 U J J T Y P E O T H E R T Y P E R 1 0 1 3 3 K 3 . 3 K R 1 0 2 6 . - Page 6 T-405TX SCHEMATIC DIAGRAM N A R F - 6 1 3 0 U J J T Y P E O T H E R T Y P E R 1 0 1 3 3 K 3 . 3 K R 1 0 2 6 .
- Page 7 T-405TX PRINTED CIRCUIT BOARD VIEW FROM SOLDERING SIDE AS MARKED -REPLACE FUSE RISK FIRE AC-H R901 AC-G JL901b R909 R908 D910 R919 Q107 C902 C108 D903 R142 D911 5.6V J106 C915 R911 J102 R129 C914 L107 X106 C147 J111 C903...
- Page 8 T-405TX PRINTED CIRCUIT BOARD VIEW FROM SOLDERING SIDE R759 DISPLAY PC BOARD (NADIS-6131) R761 R762 Q754 J719 J717 J716 R765 R754 R753 R756 R755 D753 R752 Q753 J712 D752 J711 C757 C760 J701 C759 C758 R774 R775 JL901a 25136133 NCPS-6133...
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Page 9: Printed Circuit Board-Parts List
T-405TX PRINTED CIRCUIT BOARD-PARTS LIST CIRCUIT NO. PART NO. DESCRIPTION MAIN CIUCUIT PC BOARD(NARF-6130-4C/4D) CIRCUIT NO. PART NO. DESCRIPTION Resistors R902,R903 453530104 Front end TU001 240102 FE417-G02 R904 453530474 R905 443524704 Q103 22241151 LA1837 R906 443621024 Q701 22241076 LM7001J Sockets... - Page 10 T-405TX CONTROL POSITIONS AND NAME PRESET button FM MODE button MEMORY button TIMER button STANDBY/ON button FM STEREO TUNER PRESET TIMER MEMORY FM MODE CLEAR STANDBY/ ON TUNING DISPLAY CHARACTER ACCUCLOCK ACCUCLOCK T-405TX DISPLAY button DISPLAY CHARACTER button TUNING button...
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Page 11: Adjustment Procedures
T-405TX ADJUSTMENT PROCEDURES Preparation Input FM mono: 1kHz,75kHz FM stereo: 1kHz,67.5kHz Pilot signal: 19kHz,7.5kHz devi. 2. FM Adjustment Stereo modu- Connection Adjustment FM SG Output Adjust Tuning Item Step Remarks lator output of instrument point output indicator frequency L101 DC voltmeter... - Page 12 T-405TX Using the timer The T-405TX features a Timer function that enables you to start playing or recording a specified component at a specified time.To use this function ,you need to configure a system that includes an ONKYO amplifier A-905TX connected to the T-405TX and other components via REMOTE CONTROL jacks.
- Page 13 T-405TX MICROPROCESSOR 1.8K CONNECTION DIAGRAM 4.7K 4.19MHz Q701 4.7K LM7001 PLL SYNTHESIZER TP701 CONTROLLER INITIALIZING DATA Q755 RDSDATA BU1922 RDSSIG STEREO RDSSCL OR BU1923 POFF AYSS SYSIN RESET SYSOUT 220K Q751 POWER SYSTEM BUS Q103 VDD3 LA1837 MICROPROCESSOR FM AND AM...
- Page 14 T-405TX MICROPROCESSOR TERMINAL DISCRIPTIONS Pin No. Function Description Pin No. Function Description RDSDATA Data input pin from RDS decoder RDSSIG Signal input pin from RDS decoder RDSSCK Clock input pin from RDS decoder Grid output pin POFF Power failure detector input pin...
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Page 15: Ic Block Diagram
T-405TX IC BLOCK DIAGRAM Q103:LA1837 REGULATOR DECODER ANTI-BIRDIE RF AMP STEREO PHASE SWITCH BUFFER MUTE AMIF PILOT 304kHz COMP S-METER AM/FM S-CURVE S-METER IF-BUFF STEREO TUNING DRIVER DRIVER FM IF... - Page 16 T-405TX IC BLOCK DIAGRAM Q701:LM7001J Phase Detector Charge Pump Reference Divider X IN XOUT VDD1 FM IN VDD2 Programable Divider AM IN Shift Register/Latch DATA Pin No. Terminal Description XOUT Connect the 7.2MHz crystal resonator. Chip enable terminal.Connect to the terminal PLL of microprocessor.
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Page 19: Packing View
T-405TX PACKING VIEW REF.NO. PART NO. DESCRIPTION Pad A 29091888 Pad B 29091889 0.515*650*550,Sheet 29095835 PP tape 29110071 Staple 282301 D240*W250,Polybag 29100180 Carton 29053738 Label EAN 29362841 Audio connection cable 2010376 Remote control cable 2010375 FM-antenna 292116 YAE21-0237,FM antenna adapter... - Page 20 Sales & Product Planning Div. : 2-1, Nisshin-cho, Neyagawa-shi, OSAKA 572-8540, JAPAN Tel: 072-831-8111 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 Tower I, 223 Hing Fong Road, Kwai Chung, HOMEPAGE N.T., HONG KONG Tel: 852-2429-3118 Fax: 852-2428-9039...