Page 1
DTR-6.3 3 7 63 1515 0 Ref. No. 3733 SERVICE MANUAL SERVICE MANUAL June, 2002 AV RECEIVER DTR-6.3 MODEL Black model L 13942296513 BMDD 120V AC, 60Hz RC-481M SAFETY-RELATED COMPONENT WARNING!! COMPONENTS IDENTIFIED BY MARK ON THE SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
DTR-6.3 3 7 63 1515 0 SPECIFICATIONS AMPLIFIER SECTION TUNER SECTION Continuous average power output (FTC) All channels: 100 W per channel min. RMS at 8 ohm, Tuning range: 87.5 -108.0 MHz (50-kHz steps) 2 channels driven from 20 Hz to 20 Usable sensitivity kHz with no more than 0.08% total...
Page 3
DTR-6.3 3 7 63 1515 0 SERVICE PROCEDURES 1. Replacing the fuses 3. Safety-check out (Only U.S.A. model) This symbol located near the fuses indicates that the After correcting the original service problem, perform the fuse used is fast operating type. For continued protection against following safety check before releasing the set to the customer.
Page 4
DTR-6.3 3 7 6 3 1 5 1 5 0 CAUTION: Replacement for transistor of mark *, if necessary EXPLODED VIEW-PARTS LIST NOTE: THE COMPONENTS IDENTIFIED BY MARK ! must be made from the same beta group (h ) as ARE CRITICAL FOR RISK OF FIRE AND the original type.
Page 24
DTR-6.3 3 7 63 1515 0 SCHEMATIC DIAGRAM 1-2 Display section TO NAPS-7477 (SCH.-6) P7502A AC6V AC6V Except D C7505 473Z HPDET HPR2 RL7701 HPL2 L 13942296513 D7702 1SS352 OR 1SS355 D7506 D7701 1SS352 OR 1SS355 Q7701 C7540 1SS352 KRC102S 220/6.3...
Page 25
DTR-6.3 3 7 6 3 1 5 1 5 0 SCHEMATIC DIAGRAM 2-1 DSP section 1 ( S C H . - 3 ) ( S C H . - 9 ) ( S C H . - 9 ) ( S C H .
Page 26
DTR-6.3 3 7 6 3 1 5 1 5 0 SCHEMATIC DIAGRAM 2-2 DSP section 2 3 3 0 J 3 3 0 1 0 / 1 6 A G N D 1 O U T 2 1 3...
Page 27
DTR-6.3 3 7 6 3 1 5 1 5 0 SCHEMATIC DIAGRAM 2-3 DSP section 3 (SCH.-9) O N A E T C - 7 4 8 6 T O T U N E R P A C K...
Page 28
DTR-6.3 3 7 6 3 1 5 1 5 0 SCHEMATIC DIAGRAM 2-4 DSP section 4 D I R I N T 1 5 1 : P 4 4 / A D 4 7 6 : P 7 2 / A N I 2...
Page 29
DTR-6.3 3 7 63 1515 0 SCHEMATIC DIAGRAM 3 Front panel section N A V D - 7 4 6 8 V 4 C V 4 Y V - 4 R 2 5 5 1 V 4 - L...
Page 30
DTR-6.3 3 7 63 1515 0 SCHEMATIC DIAGRAM 4-1 Power amplifier section 1 N A A F - 7 4 8 3 P 4 0 4 R 5 1 6 3 5 0 . 7 V 1 2 0 ( 1 / 4 W )
Page 31
DTR-6.3 3 7 63 1515 0 SCHEMATIC DIAGRAM 4-2 Power amplifier section 2 T O N A D G - 7 4 6 0 T O N A D G - 7 4 6 0 T O N A A F - 7 4 7 4 ( S C H .
Page 32
DTR-6.3 3 7 63 1515 0 SCHEMATIC DIAGRAM 5-1 Power amplifier section 3 N A A F - 7 4 7 4 [ 5 5 . 5 V ] Q 6 0 3 3 R 6 1 6 3...
Page 33
DTR-6.3 3 7 63 1515 0 SCHEMATIC DIAGRAM 5-2 Power amplifier section 4 [ 5 5 . 5 V ] Q 6 0 3 0 R 6 1 6 0 R 6 0 8 0 3 3 K N A A F - 7 4 7 4...
Page 34
DTR-6.3 3 7 63 1515 0 SCHEMATIC DIAGRAM 7 Power supply section C 9 2 2 N A P S - 7 4 8 4 2 2 0 / 3 5 C 9 2 1 + 1 3 V S...
Page 35
DTR-6.3 3 7 63 1515 0 SCHEMATIC DIAGRAM 6 Output section NAETC-7476 P 6 8 0 3 L 6 8 5 0 S 1 . 3 C C 6 6 5 0 1 0 3 J R 6 8 5 0...
Page 36
DTR-6.3 3 7 63 1515 0 SCHEMATIC DIAGRAM 8 Video section N A V D - 7 4 6 4 R 2 4 3 C 2 5 1 1 0 4 Z R 2 5 1 0 0 0 J...
Page 37
DTR-6.3 3 7 63 1515 0 SCHEMATIC DIAGRAM 9 N A E T C - 7 4 6 6 Q 2 2 5 7 C 2 2 5 5 3 . 9 K 2 2 0 R 2 2 5 5...
Page 38
DTR-6.3 3 7 63 1515 0 PC BOARD-CONNECTION VIEW H E A D P H O N E V O L U M E N A E T C - 7 4 6 3 N A S W - 7 4 6 2 ( S C H .
Page 39
DTR-6.3 3 7 63 1515 0 PC BOARD-CONNECTION VIEW J L 6 9 5 2 B J L 6 9 5 1 B A D P H O N E N A E T C - 7 4 6 3 P R I M A R Y ( S C H .
Page 47
DTR-6.3 3 7 63 1515 0 PRINTED CIRCUIT BOARD-PARTS LIST 6 CIRCUIT NO. PART NO. DESCRIPTION CONNECTOR PC BOARD (NAETC-7486-1T) Capacitors CIRCUIT NO. PART NO. DESCRIPTION C5000~C5005 374721015 100pF+/-10%,50V,Plastic Transistors C5010~C5015 393341017 100uF,16V,Elect. Q2031,Q2032 2215960 or KRC102M or C5020~C5025 394681007 10uF,50V,Elect.
Page 48
DTR-6.3 3 7 63 1515 0 PACKING PROCEDURES Bottom Accessary bag L 13942296513 P901 Put the label 81 between page 2 and page 3 of instruction manual E. Speaker Cable REF.NO. PART NO. DESCRIPTION 29092052 29100153 1020x720,Polybag 29110149 Tape, cellophane...
Need help?
Do you have a question about the DTR-6.3 and is the answer not in the manual?
Questions and answers