Page 1
DTR-8.4 3 7 63 1515 0 Ref. No. 3788 SERVICE MANUAL SERVICE MANUAL Dec., 2003 AV RECEIVER DTR-8.4 MODEL Standby/On Master Volume Standby Direct/ Zone 2 ( Pure Audio Rec ( Audio Video 1 Video 2 Video 3 Video 4...
DTR-8.4 3 7 63 1515 0 SPECIFICATIONS Amplifier Section General Power output: 110 W (8 , 20 Hz~20 kHz, FTC) Power supply: American model: AC 120 V, 60 Hz All channels: (American Model) Australian model: AC 230~240 V, 50 Hz...
DTR-8.4 3 7 63 1515 0 SERVICE PROCEDURES 1. Replacing the fuses 3. Safety-check out (U.S.A. model only) This symbol located near the fuses indicates After correcting the original service problem, perform the that the fuse used is fast operating type. For continued following safety check before releasing the set to the customer.
Page 4
20 21 25 26 27 28 Standby/On button Input selector buttons & indicators This button is used to set the DTR-8.4 to On or These buttons are used to select the following input Standby. sources: DVD, VIDEO 1~5, TAPE, TUNER, PHONO, CD, and NET AUDIO.
Tuning [ ] buttons This control is used to set the volume of the These buttons are used to tune into radio stations DTR-8.4 from 0 to 100. and to select items on the onscreen setup menus (OSD). Direct/Pure Audio button...
Page 6
DTR-8.4 3 7 63 1515 0 PANEL VIEWS DISPLAY Audio input format indicators Multipurpose display area These indicators sho w the audio input format for the Normally, the name of the currently selected input currently selected input source. source is displayed here. When you select the AM or FM input source, the radio frequenc y and preset Listening mode &...
These analog inputs can be used to connect a CD L/R surround back inputs on a separate power amp player with analog outputs. when the DTR-8.4 is used as a preamp, or to feed a power amp in Zone 2. u163...
Page 8
MONITOR OUT If you want to use the remote controller to control the DTR-8.4 from Zone 2, or if the DTR-8.4 is This S-V ideo or composite video output can be con- installed in a cabinet and the line of sight between nected to the video input on your TV or projector .
The DTR-8.4' s remote controller is a multipurpose Surround button de vice that can be used to control not just the DTR-8.4 This button is used to select the Dolby and DTS lis- but your other AV components as well. This section tening modes.
] button is Muting button used to select the next track. This button is used to mute the DTR-8.4. This func- Pause [ ] button tion can be set only with the remote controller. This button is used to pause playback.
During playback it selects trol it with the DTR-8.4' s remote controller. You only the beginning of the current chapter or track. The need to point the remote controller at the DTR-8.4.
Page 12
Setup/Guide button This button is used to access the DVD player' s onscreen setup menus. Muting button This button is used to mute the DTR-8.4. This func- tion can be set only with the remote controller . Play [ ] button This button is used to start DVD playback.
Page 13
VOL button This button is used to set the volume of the DTR-8.4. Muting button This button is used to mute the DTR-8.4. This func- tion can be set only with the remote controller. Play [ ] button This button is used to start CD playback.
DTR-8.4. MiniDisc Mode Muting button This button is used to mute the DTR-8.4. This func- MiniDisc mode is used to control an Integra/Onkyo tion can be set only with the remote controller . MiniDisc recorder connected to the DTR-8.4 via . To...
VOL button This button is used to set the volume of the DTR-8.4. Muting button This button is used to mute the DTR-8.4. This func- tion can be set only with the remote controller. Play [ ] button This button is used to start tape playback.
DTR-8.4 3 7 63 1515 0 BLOCK DIAGRAM DIGITAL AUDI O INPUT OPTI CAL VIDEO 5 DIGITAL AUDI O OUTPU T 24.576MHZ (FRONT) OPTI CAL 1 SRAM COAX IAL 1 CY7C CY7C 1019BV33 1019BV33 TC92 COAX IAL 2 OPTICAL 2 24.576MHZ...
Page 18
DTR-8.4 3 7 63 1515 0 BLOCK DIAGRAM 11dB MUTE MULTICHANNEL INPUT 11dB HEAD PHONE MUTE HPEN MASTER VOLUM E TONE PREOUT NJU7 306G LEFT Power Amplif ier BOOST MUTE +29d B SL->L C->L SW->L BYPASS TC94A07F FRON T SPEAKE RS...
Page 31
DTR-8.4 3 7 63 1515 0 SCHEMATIC DIAGRAM 7 Power supply and speaker terminal sections P TYPE P TYPE NAETC-7695 NAETC-7694 P6800 L6800 S1.3C L6803 S1.3C SPEAKERS R6800 22 R6803 22 R6810 22 R6813 22 D TYPE D TYPE...
Page 43
DTR-8.4 3 7 63 1515 0 WIRING VIEW 2 NAETC-8086 THERMAL DET. NAETC-8085 PC BOARD THERMAL DET. (SCH.7) PC BOARD 120V model only (SCH.7) 120V model only POWER SUPPLY JL9504B PC BOARD (NAPS-7708) (SCH. 7) P9502A P9508 JL9503B FAN DRIVE...
Page 51
DTR-8.4 3 7 63 1515 0 PRINTED CIRCUIT BOARD VIEW FROM SOLDERING SIDE 2-2 L 13942296513 u163 SOLDERING VIEW FOR CHIP PARTS DSP CIRCUIT PC BOARD (NADG-7687) http://www.xiaoyu163.com...
Page 65
DTR-8.4 3 7 63 1515 0 PRINTED CIRCUIT BOARD VIEW 7-3 DCDET DCD D ET CDE E T FANDET NDE E T DET T VOLH AGND D FAN DRIVE CIRCUIT PC BOARD (NAETC-7696) ETC-7698 CMK-P3X THERMAL DET. THERMAL DET.
Page 66
DTR-8.4 3 7 63 1515 0 PRINTED CIRCUIT BOARD VIEW 9-1 P4011A MAIN CONNECTOR PC BOARD (NAAR-8078) L 13942296513 u163 http://www.xiaoyu163.com...
Page 67
DTR-8.4 3 7 63 1515 0 PRINTED CIRCUIT BOARD VIEW 9-2 NCAR-8078 NCAR 8078 NCAR 8078 NCAR-8078 0 0 0 0 25138078A 25138078A 002A 002A R291 R291 SIDE P4011A MAIN CONNECTOR PC BOARD (NAAR-8078) NCETC-8 L 13942296513 CONTROL TERMINAL PC BOARD...
Page 68
DTR-8.4 3 7 63 1515 0 PRINTED CIRCUIT BOARD VIEW 9-1 P800A MAIN CONNECTOR PC BOARD (NAAR-8078) L 13942296513 u163 http://www.xiaoyu163.com...
Page 69
DTR-8.4 3 7 63 1515 0 PRINTED CIRCUIT BOARD VIEW 9-2 NCAR-8078 25138078A P4012A MAIN CONNECTOR PC BOARD (NAAR-8078) CETC 8 L 13942296513 P205 E201 P201 CONTROL TERMINAL PC BOARD (NAETC-8083) u163 http://www.xiaoyu163.com...
Page 70
DTR-8.4 3 7 63 1515 0 PRINTED CIRCUIT BOARD VIEW 11 NCVD-807 25138079 Soldering side A (Parts location side) L 13942296513 NCVD-807 009 9 25138079 Soldering side B u163 COMPOSITE VIDEO PC BOARD (NAVD-8079) http://www.xiaoyu163.com...
Page 71
DTR-8.4 3 7 63 1515 0 PRINTED CIRCUIT BOARD VIEW 10-2 P28 8 02 Soldering side A (Parts location side) L 13942296513 P280 0 2 P280 0 2 R R 2849 R2832 R2812 C2812 C 812 R R 2833...
Page 72
DTR-8.4 3 7 63 1515 0 PRINTED CIRCUIT BOARD VIEW 10-1 Soldering side A (Parts location side) L 13942296513 3 3 3 u163 Soldering side B S VIDEO PC BOARD (NAVD-8069) http://www.xiaoyu163.com...
Page 73
DTR-8.4 3 7 63 1515 0 MAIN MICROPROCESSOR-CONNECTION DIAGRAM Q6704 Q6070~Q6076 Q6703 GATE CURRENT GATE CIRCUIT DET. CIRCUIT Q604,Q607, Q4401 Q4400 THERMA Q616 TONE TONE DET. NETTUNE CONTROL CONTROL CIRCUIT NJU7308G NJU7308G RESET PIN POWER FAILURE DET. Q2821 VIDEO...
Page 74
DTR-8.4 3 7 63 1515 0 MAIN MICROPROCESSOR-CONNECTION DIAGRAM Q6701,Q6702 VOLTAGE DETECTOR Shows a left channel only. Shows a left channel only. LEFT CH. SURROUND CENTER/SUB LEFT CH. WOOFER PRE RL6902 Q4600 Q4610 OUTPUT Q4603 Q4613 Q4602 Q4612 OUTPUT...
Page 75
DTR-8.4 3 7 63 1515 0 SUB MICROPROCESSOR-CONNECTION DIAGRAM P204 F1 1 Q 7 2 0 2 B U F F E R P 7 4 8 1 P H O N E S S Y N C Y SIGNAL...
Page 76
DTR-8.4 3 7 63 1515 0 SUB MICROPROCESSOR-CONNECTION DIAGRAM D 7 5 3 4 R E D Q 7 5 3 4 G R E E N D 7 5 3 2 D 7 5 3 0 D 7 5 3 1...
Page 77
DTR-8.4 3 7 6 3 1 5 1 5 0 MAIN MICROPROCESSOR-TERMINAL DESCRIPTION Function Description Function Description 1 DSPDA Serial data output pin to transfer the data to DSP, DIR, Nettune DAC and Second PLL ICs. 51 ~CODECPD Power down output pin of CODEC IC.
DTR-8.4 3 7 63 1515 0 ADJUSTMENT AND CONFIRMATION PROCEDURES 1 Idling current adjustment Before Idling current adjustment, turn the trimming resistors R6040 to R6046 to counter-clockwise. Connect the DC voltmeter at the sockets P6080 to P6086. After turn POWER to ON, adjust the trimming resistors R6040, R6041 and R6042 so that the reading of voltmeter becomes 11 mV.
Page 79
DTR-8.4 3 7 63 1515 0 ADJUSTMENT AND CONFIRMATION PROCEDURES 2 3. Confirmation of Current detection circuit Set the unit to "TEST-1-00". Connect the differentiating circuit and apply the 200Hz square signal to MULTI CHANNEL INPUT terminal of each channel.
DTR-8.4 3 7 63 1515 0 ADJUSTMENT AND CONFIRMATION PROCEDURES 3 Test Mode 1. Turn POWER button on. 2. Press and hold down CD button, then press DISPLAY and STANDBY/ON buttons. 3. After "TEST " on the FL tube is displayed, press CD button to set the unit to the test mode of FL tube.
DTR-8.4 3 7 63 1515 0 PACKING VIEW Accessory bag 7*100 Tape Speaker Cab le Bottom side P901 Knob side L 13942296513 Insert a protection sheet between a door and a front panel, and close a door. u163 http://www.xiaoyu163.com...
http://www.xiaoyu163.com EXPLODED VIEW-PARTS LIST 3 7 63 1515 0 NOTE: THE COMPONENTS IDENTIFIED BY MARK ! ARE CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK. REPLACE ONLY WITH PART NUMBER SPECIFIED. CAUTION: Replacement for transistor of mark *, if necessary must be made from the same beta group (h ) as the original type.
http://www.xiaoyu163.com PACKING-PARTS LIST 3 7 63 1515 0 REF. NO. PART NO. DESCRIPTION 29054094 Carton box 29363508 Label UPC 29100153 1020x770,Poly bag 29092125B 29100217 t0.1*70*100,Poly bag 29100097-1A 350*250,Poly bag 29110148 Tape PP 29095906 Protection sheet 29110149 Tape, cellophane 29363059A Label, speaker cable 29355450 Instruction sheet, caution 29343578...
Page 86
http://www.xiaoyu163.com 3 7 6 3 1 5 1 5 0 PRINTED CIRCUIT BOARD-PARTS LIST NOTE: THE COMPONENTS IDENTIFIED BY MARK ! ARE CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK. REPLACE ONLY WITH PART NUMBER SPECIFIED. CAUTION: Replacement for transistor of mark *, if necessary must be made from the same beta group (h ) as the original type.
Need help?
Do you have a question about the DTR-8.4 and is the answer not in the manual?
Questions and answers