Onkyo TX-SR502 Service Manual
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Onkyo TX-SR502 Service Manual

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See also: Instruction Manual
STANDBY/ON
A
SPEAKERS B
PHONES
TX-SR502
Black, Golden and Silver models
MDD, MDC
120V AC, 60Hz
MPA, MPT
230-240V AC, 50Hz
MWT
120V/220-230V AC, 50/60Hz
MGK, MGR, MGQ
220-230V AC, 50/60Hz
SERVICE MANUAL
SERVICE MANUAL
AV RECEIVER
TX-SR502
MODEL
TX-SR502E
TX-SR8250
HT-R520
STANDBY
LISTENING
TONE
STEREO
MODE
DISPLAY
DIGITAL INPUT
MULTI CH
DVD
VIDEO
1
VIDEO
2
VIDEO
3
VCR
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 NUMBERS 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.
TX-SR502/E/8250/HT-R520
MASTER VOLUME
TUNING
ENTER
PRESET
SETUP
RETURN
MEMORY
TUNING MODE
CLEAR
VIDEO
3 INPUT
TAPE
TUNER
C D
S VIDEO
VIDEO
L
AUDIO
R
TX-SR502E
Black and Silver models
MPP
230-240V AC, 50Hz
TX-SR8250
Golden model
MGR
220-230V AC, 50/60Hz
HT-R520
Black and Silver models
MDD, MDC
120V AC, 60Hz
ON THE
Ref. No. 3797
042004
ON
STANDBY
T V
I
INPUT
V1
V2
V3
+
1
2
3
DVD
MULTI CH
TV CH
4
5
6
-
CD
TAPE
TUNER
7
8
9
T V VOL
+10
0
CLEAR
--/---
TUNER/
TONE
TAPE
_
+
AMP
REMOTE MODE
DVD
CD
MD
CDR
TV
VCR
CABLE
SAT
DIMMER
SLEEP
TV
INPUT
+
CH
DISC
ENTER
VOL
-
PREV
CH
DISPLAY
MUTING
REC
SP A
SP B
RANDOM
AUDIO
SUBTITLE
ANGLE
LAST M
SURR
ALL ST
STEREO
REPEAT
A-B
SEARCH
MEMORY
DIRECT
DSP
DSP
TEST TONE
CH SEL
LEVEL
-
LEVEL+
OPEN/CLOSEVIDEO OFF
L NIGHT
CINE FLTR
RC-567M
American model
RC-567M
Others
RC-569M

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Summary of Contents for Onkyo TX-SR502

  • 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 NUMBERS APPEAR AS SHOWN IN THIS MANUAL. MAKE LEAKAGE-CURRENT OR RESISTANCE...
  • Page 2 TX-SR502/E/8250/HT-R520 ADJUSTMENT PROCEDURES IDLING CURRENT ADJUSTMENT [Note] No load and No signal Refer to Fig-1 about test points and adjustment points. 1. Before Idling adjustment, turn the trimming resistors R6040, R6041, R6042, R6043, R6044 and R6045to counter clockwise. 2. Connect the DC voltmeter to test point P6080,P6081, P6082, P6083, P6084 and P6085.
  • Page 3 Tel: 201-785-2600 Fax: 201-785-2650 http://www.onkyousa.com ONKYO EUROPE ELECTRONICS GmbH Liegnitzerstrasse 6, 82194 Groebenzell, GERMANY Tel: +49-8142-4401-0 Fax: +49-8142-4401-555 http://www.onkyo.net ONKYO CHINA LIMITED Units 2102-2107, Metroplaza Tower I, 223 Hing Fong Road, Kwai Chung, N.T., HONG KONG Tel: 852-2429-3118 Fax: 852-2428-9039 HOMEPAGE http://www.onkyo.com/...

  • Page 4: Block Diagram

    TX-SR502/E/8250/HT-R520 BLOCK DIAGRAM MAIN MICRO PROCESSOR FM/AM TUNER RDS DECODER PACK BU1924FS VIDEO3 MPP TYPE ONLY INPUT GAIN 0/6dB INPUT GAIN TAPE OUT 0/6dB INPUT GAIN TAPE IN 0/6dB INPUT GAIN Q301 BD3817KS 0/6dB SELECTOR VIDEO-2 IN VOLUME INPUT GAIN...
  • Page 5 TX-SR502/E/8250/HT-R520 MASTER VOLUME 0,,-103DB POWER AMPLIFIER PHONES OUTPUT GAIN BASS/TREBLE MUTING +27dB 0-18dB Q307 RL6800 OUTPUT GAIN BASS/TREBLE FRONT SPEAKERS-A MUTING 0-18dB +27dB Q308 FRONT SPEAKERS-B OUTPUT GAIN RL6804 0-18dB +27dB SURROUND SPEAKER OUTPUT GAIN CENTER SPEAKER 0-18dB +27dB SURROUND BACK SPEAKER...
  • Page 6 TX-SR502/E/8250/HT-R520 P306B EXPLODED VIEWS-1 70+/-5mm P101 Refer to <Fig-1> in EXPLODED VIEWS-2 A003 A003 A003 A003 A050 A430 A003 TX-SR502 MDD, MDC , HT-R520 only A033 Refer to A052 <Fig-2> in A037 F6902 EXPLODED VIEWS-2 A040 F6901 L=20+/-2mm P7502 F903...
  • Page 7 EXPLODED VIEWS-2 POWER TRANSISTOR & REAR PANEL SECTION <Fig-1> <Fig-2> P901 A031 A034 L=300+/-5mm A401 A402 P902A MGK only Q6050 A403 TX-SR502 MGR Q6060 , TX-8250 only Q6051 Q6061 Q6052 Q6062 TX-SR502, 502E Q6054 Q6050A Q6053 , 8250 ONLY Q6063 Q6065...
  • Page 8 TX-SR502/E/8250/HT-R520 FL TUBE VIEW Q7501: HNA-16SM10T 12G 11G 2-1 3-1 4-1 5-1 1-2 2-2 3-2 4-2 5-2 1-3 2-3 3-3 4-3 5-3 1-4 2-4 3-4 4-4 5-4 1-5 2-5 3-5 4-5 5-5 1-6 2-6 3-6 4-6 5-6 1-7 2-7 3-7 4-7 5-7...
  • Page 9 TX-SR502/E/8250/HT-R520 MICROPROCESSOR TERMINAL DESCRIPTIONS-1 Q7008:MPD784225GC-XXX-8BT(MAIN MICROPROCESSOR) Pin name Description Pin name Description PROTECT Current detection and DC voltage detection Broadcast detection input terminal more input terminal. than a muting level. ~STEREO FM stereo broadcast detection input terminal. VOLH Thermal detection and power amplifier output level detection input terminal.
  • Page 10 TX-SR502/E/8250/HT-R520 MICROPROCESSOR TERMINAL DESCRIPTIONS-2 Q7502:MPD780232GC-030-8BT(SUB MICROPRCESSOR) Pin name Description Pin name Description Segment output terminal of P22. VDD1 Power supply terminal. Connect to 5V. VSS1 Ground terminal. Segment output terminal of P21. X'tal input terminal. Segment output terminal of P20.

  • Page 11: Ic Block Diagram And Terminal Descriptions

    TX-SR502/E/8250/HT-R520 IC BLOCK DIAGRAM AND TERMINAL DESCRIPTIONS-1 Q181: BU1924FS (RDS decoder)-1 BLOCK DIAGRAM 100k 120k 8th Switched 100k capacitor filter comparator anti-aliasing filter Vref RCLK (16) Analog Power supply QUAL RDATA Bi-phase Differential 57kHz (12) decoder 1187.5Hz decoder RDS/ARI Digital...

  • Page 12: Ic Block Diagram And Terminal Descriptions

    TX-SR502/E/8250/HT-R520 IC BLOCK DIAGRAM AND TERMINAL DESCRIPTIONS-2 Q212,213: LA7956 (Video switch) BLOCK DIAGRAM video switch driver control (4input 1output) VIDEO VINI VIN2 VIN3 VIN4 TRUTH TABLE Vin1 Vin2 Vin3 Vin4 (Pin 2) (Pin 3) (Pin 4) (Pin 6) (Pin 8)
  • Page 13 TX-SR502/E/8250/HT-R520 IC BLOCK DIAGRAM AND TERMINAL DESCRIPTIONS-3 Q291: BU4053B (Triple 2- channel analog multiplexer/ demultiplexer) BLOCK DIAGRAM VDD (16) INH (6) BINARY TO 1of 2 LEVEL A (11) CONVERTER B (10) DECODER WITH INH C (9) VSS (8) VEE (7)

  • Page 14: Table Of Contents

    TX-SR502/E/8250/HT-R520 IC BLOCK DIAGRAM AND TERMINAL DESCRIPTIONS-4 Q301: BD3817KS (7ch Volume with 10ch input selector)-1 BLOCK DIAGRAM LOGIC AGND1 1 VINFR AGND2 2 GOUTFL Input Input select2 select1 INA1 3 VINFL INA2 4 AGND11 INB1 5 TNF1 TREBLE INB2 6...

  • Page 15: Q301: Bd3817Ks (7Ch Volume With 10Ch Input Selector)

    TX-SR502/E/8250/HT-R520 IC BLOCK DIAGRAM AND TERMINAL DESCRIPTIONS-5 Q301: BD3817KS (7ch Volume with 10ch input selector)-2 TERMINAL DESCRIPTION Pin No. Pin Name Description Pin No. Pin name Description AGND1 Analog ground terminal INDSPSW SWch DSP input terminal AGND2 Analog ground terminal...

  • Page 16: Ina2

    TX-SR502/E/8250/HT-R520 IC BLOCK DIAGRAM AND TERMINAL DESCRIPTIONS-6 Q301: BD3817KS (7ch Volume with 10ch input selector)-3 TERMINAL DESCRIPTION Pin No. Pin Name Description (-)Power supply terminal Non-connected terminal (+)Power supply terminal AGND13 Analog ground terminal ROUTA1 1ch REC input and output terminal A...

  • Page 17: Inb1

    TX-SR502/E/8250/HT-R520 IC BLOCK DIAGRAM AND TERMINAL DESCRIPTIONS-7 Q701: CS494003CQZ (Multi-Standard Audio Decoder)-1 BLOCK DIAGRAM SAI 0 Serial External Memory SAI 1 Audio SAI 2 Interface Interface SAI 3 Compressed DSP C Digital DAO 0 Digital Interface Programmable Audio Frame 32-Bit DSP...
  • Page 18 TX-SR502/E/8250/HT-R520 IC BLOCK DIAGRAM AND TERMINAL DESCRIPTIONS-8 Q701: CS494003CQZ (Multi-Standard Audio Decoder)-2 TERMINAL DESCRIPTION FILT1 - Phase-Locked Loop Filter Connects to an external filter for the on-chip phase-locked loop. FILT2 - Phase Locked Loop Filter Connects to an external filter for the on-chip phase-locked loop.
  • Page 19 TX-SR502/E/8250/HT-R520 IC BLOCK DIAGRAM AND TERMINAL DESCRIPTIONS-9 Q701: CS494003CQZ (Multi-Standard Audio Decoder)-3 TERMINAL DESCRIPTION FLRCLKN1 - PCM Audio Input Sample Rate Clock Digital-audio frame clock input. FLRCLKN1 typically is run at the sampling frequency. FLRCLKN1 operates asynchronously from all other DSPAB clocks.
  • Page 20 TX-SR502/E/8250/HT-R520 IC BLOCK DIAGRAM AND TERMINAL DESCRIPTIONS-10 Q701: CS494003CQZ (Multi-Standard Audio Decoder)-4 TERMINAL DESCRIPTION LRCLK1 - Audio Output Sample Rate Clock Bidirectional digital-audio output frame clock for AUDATA4, AUDATA5, AUDATA6, and AUDATA7. As an output, LRCLK1 can provide all standard output sample rates up to 192 kHz and is synchronous to MCLK.

  • Page 21: Inb2

    TX-SR502/E/8250/HT-R520 IC BLOCK DIAGRAM AND TERMINAL DESCRIPTIONS-11 Q701: CS494003CQZ (Multi-Standard Audio Decoder)-5 TERMINAL DESCRIPTION SDATAN1, GPIO25 - PCM Audio Input Data, General Purpose I/O Digital-audio PCM data input. This pin can act as a general-purpose input or output that can be individually configured and controlled by DSPC.

  • Page 22: Inc1

    TX-SR502/E/8250/HT-R520 IC BLOCK DIAGRAM AND TERMINAL DESCRIPTIONS-12 Q701: CS494003CQZ (Multi-Standard Audio Decoder)-6 TERMINAL DESCRIPTION SD_DATA0~SD_DATA7, EXTD0~EXTD7 - SDRAM Data Bus, SRAM External Data Bus SDRAM data bus 7:0. SRAM external data bus 7:0. BIDIRECTIONAL - Default: INPUT SD_ADDR0~SD_ADDR10, EXTA0~EXTA10 - SDRAM Address Bus, SRAM External Address Bus SDRAM address bus 10:0.

  • Page 23: Inc2

    TX-SR502/E/8250/HT-R520 IC BLOCK DIAGRAM AND TERMINAL DESCRIPTIONS-13 Q701: CS494003CQZ (Multi-Standard Audio Decoder)-7 TERMINAL DESCRIPTION UHS0, GPIO18 - Mode Select Bit 0, General Purpose I/O DSPC control port mode select bit 0. This pin is sampled at the rising edge of RESET and is ne of three pins used to select the control port mode.
  • Page 24 TX-SR502/E/8250/HT-R520 IC BLOCK DIAGRAM AND TERMINAL DESCRIPTIONS-14 Q702: MX29LV040 (4M-Bit CMOS Single Voltage 3V Only Equal Sector Flash Memory) BLOCK DIAGRAM PROGRAM/ERASE CONTROL WRITE INPUT HIGH VOLTAGE STATE LOGIC MACHINE (WSM) STATE REGISTER MX29LV040 FLASH ARRAY ADDRESS ARRAY LATCH SOURCE...
  • Page 25 TX-SR502/E/8250/HT-R520 IC BLOCK DIAGRAM AND TERMINAL DESCRIPTIONS-15 Q7301: IC42S16100 (16-Mbit Synchronous Dynamic RAM)-1 BLOCK DIAGRAM COMMAND DECODER MEMORY CELL & ARRAY ADDRESS 2048 CLOCK BUFFER GENERATOR MODE BANK 0 REGISTER DATA IN SENSE AMP I/O GATE BUFFER I/O 0-15 COLUMN DECODER...

  • Page 26: Ind1

    TX-SR502/E/8250/HT-R520 IC BLOCK DIAGRAM AND TERMINAL DESCRIPTIONS-16 Q7301: IC42S16100 (16-Mbit Synchronous Dynamic RAM)-2 TERMINAL DESCRIPTION Pin No. Pin name Function (In Detail) 20 to 24 A0-A10 A0 to A10 are address inputs. A0-A10 are used as row address inputs during active command input 27 to 32 and A0-A7 as column address inputs during read or write command input.
  • Page 27 TX-SR502/E/8250/HT-R520 IC BLOCK DIAGRAM AND TERMINAL DESCRIPTIONS-17 Q800: AK4588VQ (2/8-Channel Audio CODEC with DIR)-1 BLOCK DIAGRAM PVSS PVDD X'tal Clock Oscillator Recovery MCKO1 Clock 8 to 3 Generator MCKO2 Input Selector LRCK2 Audio DAIF BICK2 Decoder SDTO2 DAUX2 AVDD AVSS DVDD Error &...

  • Page 28: Ind2

    TX-SR502/E/8250/HT-R520 IC BLOCK DIAGRAM AND TERMINAL DESCRIPTIONS-18 Q800: AK4588VQ (2/8-Channel Audio CODEC with DIR)-2 TERMINAL DESCRIPTION Pin Name Function INT1 Interrupt 1 Pin Block-Start Output Pin for Receiver Input BOUT "H" during first 40 flames. TVDD Output Buffer Power Supply Pin, 2.7V ~ 5.5V DVDD Digital Power Supply Pin, 3.3V...

  • Page 29: Ine1

    TX-SR502/E/8250/HT-R520 IC BLOCK DIAGRAM AND TERMINAL DESCRIPTIONS-19 Q800: AK4588VQ (2/8-Channel Audio CODEC with DIR)-3 TERMINAL DESCRIPTION Pin Name Function Power-Down Mode Pin When "L", the AK4588 is powered-down, all output pin goes "L", all registers arereset. When CAD1/0 pins are changed, the AK4588 should be reset by PDN pin.

  • Page 30: Ine2

    TX-SR502/E/8250/HT-R520 IC BLOCK DIAGRAM AND TERMINAL DESCRIPTIONS-20 Q800: AK4588VQ (2/8-Channel Audio CODEC with DIR)-4 TERMINAL DESCRIPTION Pin Name Function AVDD Analog Power Supply Pin, 4.5V~5.5V AVSS Analog Ground Pin, 0V Receiver Channel 0 Pin (Internal biased pin) This channel is default in serial mode.
  • Page 31 TX-SR502/E/8250/HT-R520 MICROPROCESSOR CONNECTION DIAGRAMS-1 Q7008:MPD784225GC-XXX-8BT(MAIN MICROPROCESSOR) RL901 Q201 VIDEO F901 POWER COMPOSITE AC IN MUTE TRANS. Q205 Q7006 DRIVER VIDEO-1 OUT Q921 Q208 RL6800 RELAY Q206 S-VIDEO Q7007 FRONT-A DRIVE DRIVER SPEAKERS Q207 Q6601 Q202 COMPONENT VIDEO RELAY RL6803 COMPOSITE...
  • Page 32 TX-SR502/E/8250/HT-R520 MICROPROCESSOR CONNECTION DIAGRAMS-2 Q7502:MPD780232GC-XXX-8BT(SUB MICROPROCESSOR) Q7501 FL TUBE HNA-16SM10T Q7502 SUB-MICRO PROCESSOR MPD780232G PURE NU: NO USE VDDO MDD, MDC TYPE ONLY AVDD VSS0 D7504 PURE AUDIO Q7507 Q7504 BUFFER 5MHz P282 Q7008 D7505 MAIN STANDBY MICROPROCESSOR Q7506 MDD, MDC TYPE ---- PURE AUDIO...
  • Page 33 TX-SR502/E/8250/HT-R520 OPERATION CHECK-1 DC VOLTAGE DETECTION PROTECTORS [NOTE1] Limit time to apply voltage is 0.5 - 1.0 seconds each channel. When protection operation does not occur at once, try several times. [NOTE2] Don't connect speakers or any load. Don't short speaker terminals.
  • Page 34 TX-SR502/E/8250/HT-R520 OPERATION CHECK-2 OUTPUT LEVEL & THERMAL DETECTION Regarding the power supply system of this unit. <Function> 1. High-voltage mode Usually, the power supply supplies high voltage to the power amplifier circuit when the relay(RL6901) is turned on. 2. Low-voltage mode When as follows, a power supply changes to the state of supplying low voltage when the relay (RL6901) in turned off.

  • Page 35: Inf1

    TX-SR502/E/8250/HT-R520 OPERATION CHECK-3 OUTPUT LEVEL & THERMAL DETECTION <Check procedure by test mode> The following is the procedure of checking detection operation of a microprocessor in false, by using test mode. Output level detection 1. Set the unit to test mode " Test-3-3 "...

  • Page 36: Inf2

    TX-SR502/E/8250/HT-R520 OPERATION CHECK-4 DSP DEBUG MODE Regarding the DSP debug mode TIn this test mode, the check with normal communication of a microcomputer and the data of DSP and DIR is possible. This information is a help to find the cause of failure.

  • Page 37: Ing1

    TX-SR502/E/8250/HT-R520 PANEL VIEWS-1 FRONT PANELS-1 American Models 9 10 MASTER VOLUME TUNING STANDBY/ON PRESET ENTER STANDBY SETUP RETURN LISTENING SPEAKERS B TONE STEREO MODE DISPLAY DIGITAL INPUT MEMORY TUNING MODE CLEAR VIDEO 3 INPUT PHONES MULTI CH VIDEO VIDEO VIDEO...

  • Page 38: Ing2

    TX-SR502/E/8250/HT-R520 PANEL VIEWS-2 FRONT PANELS-2 Remote control sensor TONE, [-] & [+] buttons This sensor receives control signals from the remote These buttons are used to adjust the bass and treble. controller. MULTI CH button Arrow buttons This button is used to select the multichannel DVD These buttons are used to select and adjust settings.
  • Page 39 TX-SR502/E/8250/HT-R520 PANEL VIEWS-3 DISPLAY MUTING indicator SLEEP indicator This indicator flashes when the unit is muted. This indicator lights up when the Sleep function has been set. Source/listening mode indicators Message area These indicators show the currently selected listening This area of the display shows various information mode and digital audio format.

  • Page 40: Rear Panel

    (RCA) between the unit and the other component, even if they are connected digitally. FM ANTENNA Note: can only be used with Onkyo components. This socket is for connecting an FM antenna. VIDEO 1 IN/OUT & VIDEO 2 IN FRONT SPEAKERS B The VIDEO 1 S-Video, composite video, and audio These terminal posts are for connecting speaker set B.
  • Page 41 TX-SR502/E/8250/HT-R520 PRINTED CIRCUIT BOARD VIEWS-1 PREAMPLIFIER PC BOARD (NADG-8230) Component side C703 R731 R7317 R7317 P6401 C702 C702 R731 R731 R731 R7318 R7318 R7318 R7318 R731 R731 R731 C7301 R713 R R 7 R 13 3 1 38230B C720 C720...
  • Page 42 TX-SR502/E/8250/HT-R520 R R 321 C321 R343 C320 C320 R342 R320 R341 R341 R341 R341 R340 C318 R318 R318 C326 C C 32 R317 R R 317 C317 C C 317 R339 R R 339 R R 3 R338 R R 338...
  • Page 43 TX-SR502/E/8250/HT-R520 PRINTED CIRCUIT BOARD VIEWS-2 PREAMPLIFIER PC BOARD (NADG-8230) Soldering side R321 C321 R343 C3 3 20 C3 3 20 R3 3 42 R3 3 20 R 19 C 19 R341 R3 3 4 R341 R3 1 R340 R340 C318...

  • Page 44: Inh1

    TX-SR502/E/8250/HT-R520 9 9 9 C703 9 9 9 R7317 R7317 7317 P6401 C702 C702 7 7 7 R7318 R7318 R7318 R7318 7318 7318 7318 6 6 6 5 5 5 C7301 730 0 1 8 8 8 R713 R R 7...

  • Page 45: Inh2

    TX-SR502/E/8250/HT-R520 PRINTED CIRCUIT BOARD VIEWS-3 DISPLAY PC BOARD (NADIS-8231) Soldering side Component side JL7502A JL7502A KEY0 0 KEY0 KEY0 Q7507 Q7507 Q7507 Q7507 R751 R751 7510 7510 R7503 R7503 R7503 R7503 R7503 R7503 5 13 C751 R7 7 524 C7523...
  • Page 46 TX-SR502/E/8250/HT-R520 PRINTED CIRCUIT BOARD VIEWS-4 OPERATION SWITCH PC BOARD (NASW-8232) Component side Soldering side R7616 R7616 JL7501B JL7501B HEADPHONE TERMINAL PC BOARD (NAETC-8233) Component side Soldering side E750 E7501 R7593 R7593 C7519 C7519 C7519 C7519 L7503 L7503 L7503 R7592 7592...
  • Page 47 TX-SR502/E/8250/HT-R520 PRINTED CIRCUIT BOARD VIEWS-5 DRIVER AMPLIFIER PC BOARD (NAAF-8235) Component side R5170 R5070 R5080 Q5050 D5000 J5003 R5100 C5040 C5090 J5002 R5020 R5130 R5010 R5140 C5110 Q5030 C5010 R5000 R5190 C5000 J5005 J5014 J5007 J5006 J5008 P5001 J5009 J5010...
  • Page 48 TX-SR502/E/8250/HT-R520 PRINTED CIRCUIT BOARD VIEWS-6 COMPONENT VIDEO TERMINAL REGULATOR PC BOARD PC BOARD (NAVD-8236) (NAETC-8238) Component side Component side THERM PRO- RLGND 25138236 +13VS POWER NCVD-8236 SPCS J251 DGND J245 DGND SE1H CNPT VOLH DGND D241 J244 MPUGND CPNT JL9501A...
  • Page 49 TX-SR502/E/8250/HT-R520 PRINTED CIRCUIT BOARD VIEWS-7 HOLDER PC BOARD TERMINAL PC BOARD (NAETC-8241) (NAETC-8243) Component side Component side OPTOUT COAX OPT1 CNPT DGND DGND OPT2 DGND VMUT1 VMUT2 CTLB CTLA CNPT 25138241 NCETC-8241 +12V SPEAKER TERMINAL PC BOARD (NAETC-8240) MDD, MDC type only...
  • Page 50 TX-SR502/E/8250/HT-R520 PRINTED CIRCUIT BOARD VIEWS-8 POWER AMPLIFIER PC BOARD (NAAF-8245) Component side J6008 P6981 P6983 JL6803D 10A 125V J6004 JL6805A R6231 F6901 R6230 Q6901 R6232 F6901B F6901A R6902 R6234 J6019 D6906 F6902A F6902B R6233 D6902 R6070 R6020 C6903 J6020 C6920...
  • Page 51 TX-SR502/E/8250/HT-R520 PRINTED CIRCUIT BOARD VIEWS-9 TERMINAL PC BOARD POWER SWITCH PC BOARD (NAPS-8247) (NASW-8246) Except MDD, MDC type Component side Component side S906 NCPS-8247 25138247 P917A P918A S906 POWER SUPPLY PC BOARD (NAPS-8248) Component side S902 S902 P902 P926 P925...
  • Page 52 TX-SR502/E/8250/HT-R520 PRINTED CIRCUIT BOARD VIEWS-10 VIDEO PC BOARD (NAVD-8250) Component side U282 U281 U283 P282 P201 P203 P204 P281 P282 U281 P281 P202 J252 U282 J244 U283 C289 C281 C280 C287 J248 C288 P203 P201 P202 R215 R204 C216 C282...

  • Page 53: Inj1

    TX-SR502/E/8250/HT-R520 PC BOARD CONNECTION DIAGRAM NAVD-8236 COMPONENT VIDEO TERMINAL NAETC-8240 MDD, MDC ONLY FM ANT AM ANT PC BOARD P282 U281 U283 NAETC-8244 EXCEPT MDD, MDC P202 P201 SPEAKER TERMINAL PC BOARD P241 U282 P281 TUNER UNIT P5800 P5802 NAVD-8250...
  • Page 54 1/41 PAGE TX-SR502/E/8250/HT-R520 EXPLODED VIEW PARTS LIST NOTE : THE COMPONENTS IDENTIFIED BY THE MARK ! ARE CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK. REPLACE ONLY WITH PART NUMBER SPECIFIED. <Notes> (B) : Black model <DC> : Canadian model (S) : Silver model <DD>...
  • Page 55 (S),(G) A413 LABEL (PT) 29363379-1 <502>,<502E>,<8250> A420 FACET 28198987 <502 PA,PT,GR,GQ,WT> A420 FACET 28198987 <502E>,<8250> A430 LABEL HOOKUP-ONKYO 29363194 <502 DD>,<520> F901 FUSE 6.3A-UL/T-237 252166 ! <502 DD,DC,WT> F901 or FUSE 6.3A-T/UL-ST2 252260 ! <502 DD,DC,WT> F901 FUSE 8A-UL 252198 !<520>...
  • Page 56 3/41 PAGE P901 AC CORD AS-SAA 253197HIT ! <502 PA> P901 AC CORD AS-UC-2 253368LTK ! <502 DC,DD>,<520> P901 or AC CORD AS-UC-2 ( 1) 253332HIT ! <502 DC,DD>,<520> P901 or AC CORD AS-UC-2 ( 1) 253333VOL ! <502 DC,DD>,<520> P901 or AC CORD AS-UC-2...
  • Page 57 4/41 PAGE Q6060 or MP130S-P 2203676 <502>,<502E>,<8250> Q6060 2SA1962-O 2202833 <520> Q6060 or 2SA1962-R 2202832 <520> Q6060 or MP150S-O 2203693 <520> Q6060 or MP150S-Y 2203694 <520> Q6060 or MP150S-P 2203696 <520> Q6061 2SA1941-O 2203053 <502>,<502E>,<8250> Q6061 or 2SA1941-R 2203052 <502>,<502E>,<8250> Q6061 or MP130S-O 2203673...
  • Page 58 5/41 PAGE DISPLAY PC board AS NADIS-8231-1C 1B016531-1C <8250> DISPLAY PC board AS NADIS-8231-1D 1B016531-1D <502 WT> DISPLAY PC board AS NADIS-8231-1F 1B016531-1F <520> OPERATION SWITCH PC board AS NASW-8232-1A 1B016532-1A <502 DD,DC> OPERATION SWITCH PC board AS NASW-8232-1B 1B016532-1B <502E>...
  • Page 59 When replacement the following the transistor,made from the same H rank as the original type. EXP. Q6050 - Q6055, Q6060 - Q6065 EXP. TX-SR502/E/8250/HT-R520 PC BOARD PARTS LIST PREAMPLIFIER PC BOARD (NADG-8230-1A/1B/1C/1D/1F) DISPLAY PC BOARD (NADIS-8231-1A/1B/1C/1D/1F) OPERATION SWITCH PC BOARD (NASW-8232-1A/1B/1C/1D/1F)
  • Page 60 7/41 PAGE <520>:HT-R520(American model & Canadian model) <GQ> : Hong kong model <GR> : Chinese model <PA> : Australian model <PP> : European model <PT> : Asian model (230-240V) <WT> : World wide model REF. NO. NAME DESCRIPTION Q'TY PART NO REMARKS U7501 REMO SENS...
  • Page 61 8/41 PAGE Q7002 TC74VHC541FT 22274541ER2TO Q7003 TC74HCT7007AF 222740077R2TO Q7004 BA33C25FP 22241778R2 Q7004A HEAT SINK RAD-202 27160552 Q7006 RN1404 2214490R2 Q7006 or KRC104S ( 1) 2216210R2 Q7007 RN1404 2214490R2 Q7007 or KRC104S ( 1) 2216210R2 Q7008 MPD784225GC-253-8BT 22242167R3 Q7301 IC42S16100 22242123R3 <520>...
  • Page 62 9/41 PAGE D9507 DIODE RL1N4003 22380260 D9507 or DIODE GP104003E ( 1) 22380035 D9508 ZENER D UDZS27B 224552700R2 D9508 or ZENER D UDZ27B ( 1) 224492700R2 D9508 or ZENER D HZU27B ( 1) 224662704R2 D9513 DIODE D2SB80A 22380341F L181 CHOKE COIL NCH-1477 231237K220R2 <502E>...
  • Page 63 10/41 PAGE C301 TF C ECQ-B50V-101K 374721015 <502 DD, DC>,<520> C301 TF C ECQ-B50V-471J 374724714 <502 PA,GK,GQ,GR,PT,WT> C301 TF C ECQ-B50V-471J 374724714 <502E>,<8250> C302 C-CERA C CC725CH1H-101J1 342101014R1 C303 C-CERA C CC725CH1H-101J1 342101014R1 C304 C-CERA C CC725CH1H-101J1 342101014R1 <502 DD, DC>,<520> C304 C-CERA C CC725CH1H-471J1...
  • Page 64 11/41 PAGE C361 C-CERA C CK725B1A-224K1 332132245R1 C362 ELECT C CE04W16V10M(SC) 394741007 C362 or VR C CE04W16V-10M(VR) ( 1) 394641007 C363 VX C CE04W16V-10M(VX) 393341007 C364 VX C CE04W16V-10M(VX) 393341007 C365 C-FILM C ECHU50V-222J 373022224R2 C366 C-CERA C CK725F1E-104Z1 332161040R1 C367 C-CERA C CK725F1E-104Z1...
  • Page 65 12/41 PAGE C822 C-FILM C ECHU50V-821J 373028214R2 C823 C-FILM C ECHU16V-822J 373048224R2 C824 C-FILM C ECHU50V-821J 373028214R2 C825 C-FILM C ECHU50V-821J 373028214R2 C826 C-FILM C ECHU50V-821J 373028214R2 C829 C-FILM C ECHU50V-122J 373021224R2 C830 C-FILM C ECHU50V-101J 373021014R2 C831 C-FILM C ECHU50V-122J 373021224R2 C832...
  • Page 66 13/41 PAGE C7301 C-CERA C CK725F1E-104Z1 332161040R1 <520> C7302 C-CERA C CK725F1E-104Z1 332161040R1 <520> C7303 C-CERA C CK725F1E-104Z1 332161040R1 <520> C7304 C-CERA C CK725F1E-104Z1 332161040R1 <520> C7305 C-CERA C CK725F1E-104Z1 332161040R1 <520> C7306 C-CERA C CK725F1E-104Z1 332161040R1 <520> C7307 ELECT C CE04W6.3V100M(SC) 394721017 <520>...
  • Page 67 14/41 PAGE R309 C-CARBON R RN72K1J-000JE 435030004R1 R310 C-CARBON R RN72K1J-331JE 435033314R1 R311 C-CARBON R RN72K1J-331JE 435033314R1 R312 C-CARBON R RN72K1J-331JE 435033314R1 R313 C-CARBON R RN72K1J-331JE 435033314R1 R314 C-CARBON R RN72K1J-331JE 435033314R1 R315 C-CARBON R RN72K1J-331JE 435033314R1 R316 C-CARBON R RN72K1J-331JE 435033314R1 R317...
  • Page 68 15/41 PAGE R388 C-CARBON R RN72K1J-101JE 435031014R1 R389 C-CARBON R RN72K1J-471JE 435034714R1 R390 C-CARBON R RN72K1J-223JE 435032234R1 R401 C-CARBON R RN72K1J-473JE 435034734R1 R402 C-CARBON R RN72K1J-473JE 435034734R1 R403 C-CARBON R RN72K1J-473JE 435034734R1 R404 C-CARBON R RN72K1J-473JE 435034734R1 R405 C-CARBON R RN72K1J-473JE 435034734R1 R409...
  • Page 69 16/41 PAGE R805 C-CARBON R RN72K1J-102JE 435031024R1 R806 C-CARBON R RN72K1J-102JE 435031024R1 R807 C-CARBON R RN72K1J-560JE 435035604R1 R808 C-CARBON R RN72K1J-102JE 435031024R1 R809 C-CARBON R RN72K1J-047JE 435030474R1 R810 C-CARBON R RN72K1J-123JE 435031234R1 R811 C-CARBON R RN72K1J-331JE 435033314R1 R812 C-CARBON R RN72K1J-331JE 435033314R1 R813...
  • Page 70 17/41 PAGE R6411 METAL R RNU1WCJ-1 452630104F R6421 C-CARBON R RN72K1J-047JE 435030474R1 R6422 C-CARBON R RN72K1J-047JE 435030474R1 R7000 C-CARBON R RN72K1J-101JE 435031014R1 R7001 C-CARBON R RN72K1J-222JE 435032224R1 R7002 C-CARBON R RN72K1J-222JE 435032224R1 R7003 C-CARBON R RN72K1J-000JE 435030004R1 <502 DD,DC>,<520> R7003 C-CARBON R RN72K1J-103JE 435031034R1...
  • Page 71 18/41 PAGE R7078 C-CARBON R RN72K1J-000JE 435030004R1 <502 DD,DC>,<520> R7078 C-CARBON R RN72K1J-333JE 435033334R1 <502 PA,GK,GQ,GR,PT,WT> R7078 C-CARBON R RN72K1J-333JE 435033334R1 <502E>,<8250> R7079 C-CARBON R RN72K1J-000JE 435030004R1 <502>,<502E>,<8250> R7079 C-CARBON R RN72K1J-472JE 435034724R1 <520> R7080 C-CARBON R RN72K1J-103JE 435031034R1 <502>,<502E>,<8250> R7080 C-CARBON R RN72K1J-472JE...
  • Page 72 19/41 PAGE R7611 C-CARBON R RN72K1J-331JE 435033314R1 R7612 C-CARBON R RN72K1J-471JE 435034714R1 R7613 C-CARBON R RN72K1J-561JE 435035614R1 R7615 C-CARBON R RN72K1J-821JE 435038214R1 R7616 C-CARBON R RN72K1J-122JE 435031224R1 R7617 C-CARBON R RN72K1J-222JE 435032224R1 R7621 C-CARBON R RN72K1J-331JE 435033314R1 R7622 C-CARBON R RN72K1J-471JE 435034714R1 R7623...
  • Page 73 20/41 PAGE S7613 or PUSH SW NPS-111-S677 ( 1) 25035714 S7614 PUSH SW NPS-111-S681 25035718 S7614 or PUSH SW NPS-111-S677 ( 1) 25035714 S7615 PUSH SW NPS-111-S681 25035718 S7615 or PUSH SW NPS-111-S677 ( 1) 25035714 S7616 PUSH SW NPS-111-S681 25035718 S7616 or PUSH SW...
  • Page 74 21/41 PAGE <502>:TX-SR502 <DC> : Canadian model <502E>:TX-SR502E(European model) <DD> : American model <8250>:TX-SR8250(Chinese model) <GK> : Korean model <520>:HT-R520(American model & Canadian model) <GQ> : Hong kong model <GR> : Chinese model <PA> : Australian model <PT> : Asian model (230-240V) <WT>...
  • Page 75 22/41 PAGE Q5031 or 2SA949-Y ( 1) 2211354 <502>,<502E>,<8250> Q5031 or 2SA949-O ( 1) 2211353 <502>,<502E>,<8250> Q5031 2SA949-Y(ONK) 2211359 <520> Q5031 or 2SA949-O(ONK) ( 1) 2211358 <520> Q5032 KTA1024-Y 2215844 <502>,<502E>,<8250> Q5032 or KTA1024-O ( 1) 2215843 <502>,<502E>,<8250> Q5032 or 2SA949-O ( 1) 2211353 <502>,<502E>,<8250>...
  • Page 76 23/41 PAGE Q5050 or 2SC1775A-E ( 1) 2210755 <520> Q5050 or 2SC1775A-F ( 1) 2210756 <520> Q5050 or 2SC1845-E ( 1) 2211733 <520> Q5050 or 2SC1845-F ( 1) 2211732 <520> Q5051 KTC3199-GR 2215864 <502>,<502E>,<8250> Q5051 or 2SC1740S-R ( 1) 2213284 <502>,<502E>,<8250>...
  • Page 77 24/41 PAGE D5005 or ZENER D DZ-5.6BSB ( 1) 224850562 D5800 DIODE 1SS133 223163 <502>,<502E>,<8250> D5800 or DIODE 1SS270A ( 1) 223205 <502>,<502E>,<8250> D5800 or DIODE WG713A ( 1) 223222 <502>,<502E>,<8250> D5800 or DIODE 1N4148M ( 1) 223273 <502>,<502E>,<8250> D5801 DIODE 1SS133 223163...
  • Page 78 25/41 PAGE C5082 CERA C CC45SL50V-040D 345020402 C5082 or CERA C CC45SL50V-040C ( 1) 345020401 C5083 CERA C CC45SL50V-040D 345020402 C5083 or CERA C CC45SL50V-040C ( 1) 345020401 C5084 CERA C CC45SL50V-040D 345020402 C5084 or CERA C CC45SL50V-040C ( 1) 345020401 C5085 CERA C CC45SL50V-040D...
  • Page 79 26/41 PAGE C6801 CERA C CK45F50V-103Z 335621030 <520> C6804 TF C ECQ-B50V-103J 374721034 <520> C6931 VR C CE04W25V-1000M(VR) 394651027S C6931 or ELECT C CE04W25V1000M(SC) ( 1) 394751027S C6932 CERA C CK45F50V-103Z 335621030 C6933 VR C CE04W16V-10M(VR) 394641007 C6933 or ELECT C CE04W16V10M(SC) ( 1) 394741007 C9513...
  • Page 80 27/41 PAGE R5101 CARBON R R16J-100K 417341044 R5102 CARBON R R16J-100K 417341044 R5103 CARBON R R16J-100K 417341044 R5104 CARBON R R16J-100K 417341044 R5105 CARBON R R16J-100K 417341044 R5110 CARBON R R16J-1K 417341024 R5111 CARBON R R16J-1K 417341024 R5112 CARBON R R16J-1K 417341024 R5113...
  • Page 81 28/41 PAGE R5805 CARBON R R16J-22 417342204 <502E>,<8250> R5810 CARBON R R16J-22 417342204 <502 PA,WT,GK,GQ,GR,PT> R5810 CARBON R R16J-22 417342204 <502E>,<8250> R5811 CARBON R R16J-22 417342204 <502 PA,WT,GK,GQ,GR,PT> R5811 CARBON R R16J-22 417342204 <502E>,<8250> R5812 CARBON R R16J-22 417342204 <502 PA,WT,GK,GQ,GR,PT> R5812 CARBON R R16J-22...
  • Page 82 NOTE : THE COMPONENTS IDENTIFIED BY THE MARK ! ARE CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK. REPLACE ONLY WITH PART NUMBER SPECIFIED. <Notes> <502>:TX-SR502 <DC> : Canadian model <502E>:TX-SR502E(European model) <DD> : American model <8250>:TX-SR8250(Chinese model) <GK> : Korean model <520>:HT-R520(American model &...
  • Page 83 30/41 PAGE Q206 or DTA114ES ( 1) 2213510 Q207 RN1241-A 2213631 Q207 or RN1241-B ( 1) 2213632 Q208 RN1241-A 2213631 Q208 or RN1241-B ( 1) 2213632 Q209 KTA1267-GR 2215995 Q209 or 2SA933S-R ( 1) 2213354 Q210 RN1241-A 2213631 Q210 or RN1241-B ( 1) 2213632 Q211...
  • Page 84 31/41 PAGE Q6043 or 2SA1930 ( 1) 2203000 <520> Q6043 2SA2005-E 2203835 <502>,<502E>,<8250> Q6043 or KTB1369-Y ( 1) 2203424 <502>,<502E>,<8250> Q6043 or 2SA1930 ( 1) 2203000 <502>,<502E>,<8250> Q6044 KTB1369-Y 2203424 <520> Q6044 or 2SA1930 ( 1) 2203000 <520> Q6044 2SA2005-E 2203835 <502>,<502E>,<8250>...
  • Page 85 32/41 PAGE Q6072 or 2SC1845-F ( 1) 2211732 <502E><8250> Q6072 or 2SC1845-E ( 1) 2211733 <502E><8250> Q6072 2SC2631-R 2214984 <520> Q6072 or 2SC2631-S ( 1) 2214985 <520> Q6073 KTC3200-BL 2215896 <502 DD,DC> Q6073 or KTC3200-GR ( 1) 2215895 <502 DD,DC> Q6073 or 2SC1775A-E ( 1) 2210755...
  • Page 86 33/41 PAGE Q6601 KTC3199-GR 2215864 Q6601 or 2SC2458-GR ( 1) 2212115 Q6601 or 2SC1740S-R ( 1) 2213284 Q6601 or 2SC1740S-S ( 1) 2213285 Q6602 KTC3199-GR 2215864 Q6602 or 2SC2458-GR ( 1) 2212115 Q6602 or 2SC1740S-R ( 1) 2213284 Q6602 or 2SC1740S-S ( 1) 2213285 Q6603...
  • Page 87 34/41 PAGE D6012 or DIODE WG713A ( 1) 223222 D6013 DIODE 1SS133 223163 D6013 or DIODE 1SS270A ( 1) 223205 D6013 or DIODE WG713A ( 1) 223222 D6014 DIODE 1SS133 223163 D6014 or DIODE 1SS270A ( 1) 223205 D6014 or DIODE WG713A ( 1) 223222...
  • Page 88 35/41 PAGE C213 or ELECT C CE04W50V2.2M(SC) ( 1) 394780227 C214 CERA C CK45F50V-223Z 335622230 C215 VR C CE04W16V-470M(VR) 394644717 C216 CERA C CK45F50V-223Z 335622230 C217 VR C CE04W50V-2.2M(VR) 394680227 C217 or ELECT C CE04W50V2.2M(SC) ( 1) 394780227 C218 VR C CE04W50V-2.2M(VR) 394680227 C218 or...
  • Page 89 36/41 PAGE R203 CARBON R R16J-75 417347504 R204 CARBON R R16J-100K 417341044 R205 CARBON R R16J-75 417347504 R206 CARBON R R16J-75 417347504 R207 CARBON R R16J-680K 417346844 R208 CARBON R R16J-680K 417346844 R209 CARBON R R16J-680K 417346844 R210 CARBON R R16J-220 417342214 R211...
  • Page 90 37/41 PAGE R6034 CARBON R R16J-820 417348214 <502 DD,DC> R6034 CARBON R R16J-820 417348214 <502 PA,PT,GR,GK,GQ,WT> R6034 CARBON R R16J-820 417348214 <502E>,<8250> R6035 CARBON R R16J-680 417346814 <520> R6035 CARBON R R16J-820 417348214 <502 DD,DC> R6035 CARBON R R16J-820 417348214 <502 PA,PT,GR,GK,GQ,WT>...
  • Page 91 38/41 PAGE R6105 CEMENT R RSS2WK-0.22 4800071 R6105 or OTHER R RGC22-0.22 OHMK ( 1) 4000131 R6105 or METAL PR MPC708-2WK-0.22 ( 1) 4500027 R6140 CARBON R R16J-22K 417342234 R6141 CARBON R R16J-22K 417342234 R6142 CARBON R R16J-22K 417342234 R6143 CARBON R R16J-22K 417342234...
  • Page 92 39/41 PAGE R6601 CARBON R R16J-1K 417341024 R6602 CARBON R R16J-1K 417341024 R6603 CARBON R R16J-1K 417341024 R6604 METAL R RNU1/2WCJ-8.2 453530824 R6605 METAL R RNU1/2WCJ-8.2 453530824 R6701 CARBON R R16J-22K 417342234 R6702 CARBON R R16J-10K 417341034 R6704 CARBON R R16J-47K 417344734 R6706...
  • Page 93 40/41 PAGE F6902B FUSE HOL NSCT-1P2031 25052133 P201 PIN JACK NPJ-10PDBY517 25045729 P202 PIN JACK NPJ-15PDBY515 25045727 P206B SOCKET NSCT-15P1030 25051240 P253A PLUG NPLG-5P220 25055236 P281 PIN JACK NPJ-1PDOR369 25045548 P281 or PIN JACK NPJ-1PDO553 ( 1) 25045771 P282 ST JACK LGY2502-0200C 25045696 P901A...
  • Page 94 41/41 PAGE JL6952A WIRE HOL NSCT-5P896 25051109 JL6952B WIRE HOL NSCT-5P896 25051109 TX-SR502/E/8250/HT-R520 PACKING PROCEDURES PARTS LIST <Notes> <502>:TX-SR502 <DC> : Canadian model <502E>:TX-SR502E(European model) <DD> : American model <8250>:TX-SR8250(Chinese model) <GK> : Korean model (B) : Black model <GQ> : Hong kong model (S) : Silver model <GR>...
  • Page 95 TX-SR502/E/8250/HT-R520 PACKING PROCEDURES-1 TX-SR502/502E/TX-SR8250 Only A801 A624 <Note> HT-R520 ---> Refer to service manual of "HT-S770". Speaker Cable Put the label 81 between A802 page 2 and page 3 of instruction manual. A821 A803 A603 A820 A804 A845 A807 A812...
  • Page 96 TX-SR502/E/8250/HT-R520 PACKING PROCEDURES-2 TX-SR502/502E/TX-SR8250 Only Packing procedure of remote controller Top side A811 Fold Fold A604 Fold Fold Fold Fold A605 A605 A607...
  • Page 97 TUNER/ REMOTE MODE TONE TAPE AMP/ TUNER REMOTE MODE With these modes you can control an Onkyo DVD player, CD player, MiniDisc recorder, or CD recorder CABLE connected via (the remote controller should be DIMMER SLEEP pointed at the unit). By entering the...
  • Page 98 REMOTE CONTROLLERS-2 RC-567M/569M/570M [ DSP] & [DSP ] buttons STANDBY button These buttons are used to select the Onkyo original This button is used to set the unit to Standby. DSP (digital signal processor) listening modes. ON button TEST TONE, CH SEL, LEVEL- & LEVEL+ This button is used to turn on the unit.
  • Page 99 TX-SR502/E/8250/HT-R520 REMOTE CONTROLLERS-3 RC-567M/569M/570M DVD Mode DVD mode is used to control an Onkyo DVD player connected to the unit via To set the remote controller to DVD mode, press the [DVD] mode button. STANDBY Before selecting DVD mode and starting playback, you should...
  • Page 100 RC-567M/569M/570M CD Mode A-B button CD mode is used to control an Onkyo CD player connected This button is used to set the A-B repeat playback function. to the unit via To set the remote controller to CD mode, press the [CD] mode button.
  • Page 101 TX-SR502/E/8250/HT-R520 REMOTE CONTROLLERS-5 RC-567M/569M/570M MD Mode & CDR Mode MD mode is used to control an Onkyo MiniDisc recorder connected to the unkt via . CDR mode is used to control an Onkyo CD recorder connected to the unit via To select MD mode, press the [MD] mode button.
  • Page 102 Tape Mode --/--- TUNER/ TONE TAPE Tape mode is used to control an Onkyo cassette recorder connected to the unit via REMOTE MODE To set the remote controller to Tape mode, press the [AMP] mode button. CABLE Before selecting TAPE mode and starting playback, you should...

  • Page 103: Indvdc

    TX-SR502/E/8250/HT-R520 SCHEMATIC DIAGRAMS-1 NADG-8230 PREAMPLIFIER SECTION TO NAETC-8234 PRE-AMPLIFIER PC BOARD P261A Q321 78L07 Q6402 78M12 R6402 10 R345 R346 +12VA DMIXR 1/2W DMIXL C6403 C6404 R300 SELDA 223Z 10/16 SELCK Q322 79L07 Q6403 SELMUT 79M12 R6403 -22V -12VA R308...
  • Page 104 TX-SR502/E/8250/HT-R520 <Notes> TO NAETC-8243 TO TUNER PACK NC=No mount of parts. +22V SEC1-1 +22V Q9501 D9502-9505:RL1N4003 2SA1015-GR R9506 SEC1-2 KTA1266-GR 22(1/2W) SEC3-1 D9507 D9505 D9503 P801 Q7006 P101 R9507 C9507 -22V KRC104S SEC3-2 220/35 OR RN1404 D9504 D9502 R9508 5.6S...

  • Page 105: Display Section

    TX-SR502/E/8250/HT-R520 SCHEMATIC DIAGRAMS-2 DISPLAY SECTION NADIS-8231 DISPLAY PC Q7501 HNA-16MM39T BOARD NOTE THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY REPLACE ONLY WITH PART NUMBER SPECIFIED VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL) ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
  • Page 106 TX-SR502/E/8250/HT-R520 G[1;16] C7505 473Z P18 62 Q7503 P17 63 2SC2712 KTC3875 P16 64 P15 65 P14 66 P13 67 P12 68 P11 69 P10 70 FIP9 71 FIP8 72 FIP7 73 FIP6 74 FIP5 75 FIP4 76 FIP3 77 FIP2 78...
  • Page 107 TX-SR502/E/8250/HT-R520 SCHEMATIC DIAGRAMS-3 DRIVER AMPLIFIER SECTION NAAF-8235 DRIVER AMPLIFIER PC BOARD 49.9V R5163 [66.5V] 120 [150] (1/4W) R5113 48.5V R5183 [65.1V] 49.1V [65.7V] R5093 (1/4W) Q5033 [100K] 1.1V C5073 [1.0V] C5033 C5053 Q5003 Q5013 C5103 47/50 10/63 C5083 C5013 [10/100] R5003 -0.1V...
  • Page 108 <Notes> NC=No mount of parts. ] Values are for HT-R520 Refer to the following table about the parts displayed by mark " ". REF. NO. TX-SR502/ 502E/ 8250/ TX-SA502 HT-R520 TO NADG-8230 P407A P406A Q5000-05,5010-15 KTC3200-BL OR 2SC1775A-E,F OR 2SC1845-E...

  • Page 109: Schematic Diagrams

    TX-SR502/E/8250/HT-R520 SCHEMATIC DIAGRAMS-4 SPEAKER TERMINAL & POWER SUPPLY SECTION NAETC-8244 NAETC-8240 HT-R520 ONLY SPEAKE SPEAKER TERMINAL PC BOARD P/W/G-TYPE P/W/G-TYPE C6800 103J C6840 222J L6800 S1.3C L5800 S1.3C R6800 D6800 C6841 222J R5800 R6810 R5810 D/J-TYPE D/J-TYPE RL6800 SPEAKER-B P/W/G-TYPE...
  • Page 110 TX-SR502/E/8250/HT-R520 TX-SR502, 502E, 8250 ONLY NOTE KER TERMINAL PC BOARD THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY REPLACE ONLY WITH PART NUMBER SPECIFIED C5800 103J C5840 222J VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL) ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
  • Page 111 D6904 D6903 TYPE F6901,6902 Refer to the following table about the parts displayed by mark " ". D10XB60H D10XB60H [334J DD, DC 10A125V TX-SR502/ 502E/ 8250/ TX-SA502 HT-R520 C6907 /100] 104J PA, PT, PP T10AL250V Q6010-6015 2SC1740S-R,S 2SC1740S C6901 GR, GQ, GK...
  • Page 112 R6102 C6052 LSPE (1/4W) 4.7K 0.22 R6012 RSPE 3.9K Q6012 (2W) CSPE TO NAETC-8240 (HT-R520) R6152 LSSPE -0.3V TO NAETC-8244 (TX-SR502/ 502E/ 8250) RSSPE [-0.3V] [0V] R6192 SBSPE Q 6022 R6092 220K C6042 -0.5V R6042 Q6062 11DADJ. -0.5V [330K] 47/50 [-0.5V]...

  • Page 113: Video Section

    TX-SR502/E/8250/HT-R520 SCHEMATIC DIAGRAMS-6 VIDEO SECTION NAVD-8236 COMPONENT VIDEO TERMINAL PC BOARD COMPONENT VIDEO RL242 CR(PR) CR(PR) CB(PB) DVD IN CB(PB) RL241 P241 P241 COMPONENT VIDEO D241 C241 CR(PR) 103Z VIDEO 1/2/3 IN CB(PB) R249 Q241 2SC1740 P241 P243B P242A P243A...
  • Page 114 TX-SR502/E/8250/HT-R520 NAVD-8250 VIDEO PC BOARD C227 223Z D202 C201 D201 2.2/50 VIDEO-2 IN VIN4 VIN3 C203 470/16 R205 P201 VIDEO-1 C220 VIN2 223Z C202 P202 2.2/50 VIN1 C204 C221 DVD IN 2.2/50 Q204 47/16 2SA933-S KTA1267-GR C222 C216 223Z 223Z...

  • Page 115: Specifications

    TX-SR502/E/8250/HT-R520 SPECIFICATIONS-1 TX-SR502/502E/8250 Amplifier Section General Power output: 75 W (8 , 20 Hz-20 kHz, FTC) Power supply: American model: AC 120 V, 60 Hz All channels: 105 W (6 , 1 kHz, DIN) Worldwide model: AC 220–230 V and...
  • Page 116 TX-SR502/E/8250/HT-R520 SPECIFICATIONS-2 HT-R520 Amplifier Section General Power supply: AC 120 V, 60 Hz Power output: Power consumption: 4.6 A 130 W(8 , 20 Hz-20 kHz, FTC) All channels: Standby power 2.5 W Dynamic power: 2 x 260 W (3 , front)

  • Page 117: Memory Backup

    GK, GQ, GR, PA, PP, PT, WT power failure. Although no batteries are required, the F902 or 252276 3.15A-SE-TL250V GK, GQ, GR, PA, PP, PT, WT TX-SR502/TX-SR502E must be plugged into an AC F903 252164 5A-UL/T-237 DC, DD outlet in order to charge the backup system.
  • Page 118 TX-SR502/E/8250/HT-R520 SERVICE PROCEDURES-2 7. Changing the AM band step 1. Worldwide model (MWT). You can select AM band step 9kHz or 10kHz by the following operation. How to select? Press and hold down the TUNER , then press the MEMORY.

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