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Onkyo HTP-750 Service Manual

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7.1-CH HOME THEATER
Surround Back Speakers (L / R)
"SKB-750X"
SERVICE MANUAL
SERVICE MANUAL
SPEAKER PACKAGE
HTP-750X(B)
MODEL
Center Speaker
"SKC-750XC"
Front Speakers (L / R)
"SKF-750XF"
Black model
B MDD
120V AC, 60Hz
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.
Powered Subwoofer
Surround Speakers (L / R)
"SKM-750XS"
ON THE
HTP-750X
Ref. No. 4105
072008
"SKW-750X"

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Summary of Contents for Onkyo HTP-750

  • 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: Exploded Views

    HTP-750X EXPLODED VIEWS-1 SKW-750X : POWERED SUBWOOFER P901 SP11 x 10 pcs. x 2 pcs. A102 A103 A101 A104 x 2 pcs. x 2 pcs. Q516 Refer to "EXPLODED VIEWS-2" Q541 Q515 SP12 E801 x 4 pcs. x 5 pcs. SP13 x 2 pcs.
  • Page 3 HTP-750X SP01a (Subwoofer ass’y) EXPLODED VIEWS-2 (All) SKW-750X : POWERED SUBWOOFER SP01b (Subwoofer ass’y) (Without AMP unit, Speaker unit and Power transformer) SP08 SP06 SP07 x 6 pcs. SP02 x 4 pcs. SP04 x 4 pcs.
  • Page 4 HTP-750X EXPLODED VIEWS-3 SKF-750XF / SKC-750XC / SKM-750XS / SKB-750X SP21 SP23 SP31 SP22 SP24 SP32 I N A l a c I N A I N A G r e l a c l a c i t e R e d "SKC-750XC"...
  • Page 5 HTP-750X EXPLODED VIEWS-4 AS-140 (for HT-S7100) BASE STAND COVER BASE PLATE ASSY PIPE ASSY ST64 ST63 ST61a ST61b x 2 pcs. x 2 pcs. ST65 x 2 pcs. BASE ST66 --Bottom view-- x 8 pcs. AS-140 (for HT-S7100) PIPE ASSY = with the speaker cables wired...

  • Page 6: Main P.c.board

    HTP-750X SCHEMATIC DIAGRAM SKW-750X : POWERED SUBWOOFER NOTE THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY NAAF-8829 REPLACE ONLY WITH PART NUMBER SPECIFIED. LINE INPUT Q301(1/2) VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL). MAIN PC BOARD P301 NJM4558LD ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
  • Page 7 HTP-750X PRINTED CIRCUIT BOARD VIEWS-1 SKW-750X : POWERED SUBWOOFER MAIN PC BOARD (NAAF-8829) Component side R517 C315 Q517 R651 Q518 R545 C316 R541 R320 R319 Q503 R317 C506 C314 R544 J306 J303 Q509 R513 C312 J304 R528 Q513 J305 J307 C313 R511 Q519...
  • Page 8 HTP-750X PRINTED CIRCUIT BOARD VIEWS-2 SKW-750X : POWERED SUBWOOFER POWER TRANSFORMER PC BOARD (NAPS-8831) Component side J905 J904 J903 J902 RISK OF FIRE P902A -REPLACE FUSE AS MARKED. P910A NCPS-8831 25138831 F901A F901B P907A 5A/125V F901...

  • Page 9: Adjustment Procedure

    HTP-750X ADJUSTMENT PROCEDURE SKW-750X : POWERED SUBWOOFER / ADJUSTMENT OF IDLING CURRENT [When] 1. Exchange transistors (Q505 - Q519). 2. Exchange MAIN PC board ass'y (NAAF-8829). [Procedure] <Note> No speaker load and No input signal. 1. Short test point P631 for amplifier is under active mode. 2.

  • Page 10: Exploded Views Parts List

    1/12 PAGE HTP-750X EXPLODED VIEWS PARTS LIST NOTE : THE COMPONENTS IDENTIFIED BY THE MARK <Notes> ARE CRITICAL FOR RISK OF FIRE AND <L> : Lch ELECTRIC SHOCK. REPLACE ONLY WITH PART NUMBER SPECIFIED. <R> : Rch REF. NO. PART NAME DESCRIPTION Q'TY PART NO.
  • Page 11 SP01a = ALL EXPLODED SP01b = Without AMP unit, Speaker unit and Power transformer EXPLODED SP02 FOOT (PLASTIC) D249-W55001B-01 EXPLODED SP04 WOOD SCREW 4STB + 45A(BC) (FOR FOOT) 411-BE4045AB1 EXPLODED SP06 WOOFER 10" (25cm) 4 ohm 80W (ONKYO ELE) W2301G EXPLODED...
  • Page 12 3/12 PAGE SP07 WOOD SCREW 4STB + 25A(BC) (FOR SP UNIT) 411-BE4025AB1 EXPLODED SP08 LED HARNESS ASS'Y 335-SKW750-01 EXPLODED SP11 WOOD SCREW 4STB + 16A(BC) (FOR AMP) 411-BE4016AB1 EXPLODED SP12 SCREW 4 x 25 ED BLK (FOR P-TRANS) 412-DE40250B1 EXPLODED SP13 CUSHION RUBBER PAD 19 x 89 T2 RUBBER (FOR P-TRANS)

  • Page 13: Printed Circuit Board Parts List

    4/12 PAGE HTP-750X PRINTED CIRCUIT BOARD PARTS LIST NOTE : THE COMPONENTS IDENTIFIED BY THE MARK ARE CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK. REPLACE ONLY WITH PART NUMBER SPECIFIED. SKW-750X MAIN PC BOARD (NAAF-8829-1S) POWER TRANS. PC BOARD (NAPS-8831-1S) CIRCUIT NO.
  • Page 14 5/12 PAGE Q502 2SC2240-BL(TPE2_F) 2211406T Q503 2SC2240-BL(TPE2_F) 2211406T Q505 KTA1024-Y 2215844T Q505 or 2SA949-Y(TPE6_F) 2211354T Q505 or 2SA949-O(TPE6_F) 2211353T Q506 2SC2229-Y(TPE6_F) 2211634T Q506 or 2SC2229-O(TPE6_F) 2211633T Q507 2SA949-Y(TPE6_F) 2211354T Q507 or 2SA949-O(TPE6_F) 2211353T Q507 or KTA1024-Y 2215844T Q509 KTA1024-Y 2215844T Q509 or 2SA949-Y(TPE6_F) 2211354T...
  • Page 15 6/12 PAGE Q605 or 2SA933S-R 2213354T Q605 or KTA1267-GR 2215995T Q606 KRA103M 2215780T Q606 or DTA124ES 2212600T Q607 2SA933S-S 2213355T Q607 or 2SA933S-R 2213354T Q607 or KTA1267-GR 2215995T Q608 2SC1740S-S 2213285T Q608 or 2SC1740S-R 2213284T Q608 or KTC3199-GR 2215864T D501 ZENER D MTZJ5.6B 224470562T...
  • Page 16 7/12 PAGE D603 or DIODE 1SS133(DS) 223280T D605 DIODE 1SS133 223163T D605 or DIODE 1SS133(DS) 223280T D606 DIODE 1SS133 223163T D606 or DIODE 1SS133(DS) 223280T D607 DIODE 1SS133 223163T D651 DIODE 1SS133 223163T D651 or DIODE 1SS133(DS) 223280T D901 DIODE D3SBA20 22380271F D902...
  • Page 17 8/12 PAGE C603 VR C CE04W16V-470M(VR) 394644717T C603 or VX C CE04W16V-470M(VX_BLK) 397344717T C604 VR C CE04W35V-33M(VR) 394663307T C604 or ELECT C CE04W35V-33M 354763309T C905 ELECT C CE62W63V-5600M 3504399 C906 ELECT C CE62W63V-5600M 3504399 C909 VR C CE04W50V-22M(VR) 394682207T C950 TF C ECQ-V50V-104J 374721044T...
  • Page 18 9/12 PAGE R307 CARBON R R16J-2.2K 417342224T R501 CARBON R R16J-1K 417341024T R502 CARBON R R16J-47K 417344734T R503 CARBON R R16J-5.6K 417345624T R504 CARBON R R16J-2.2K 417342224T R505 NF CARBON R R25J-1.0K 415471024T R506 NF CARBON R R25J-1.0K 415471024T R507 CARBON R R16J-33K 417343334T...
  • Page 19 10/12 PAGE R603 CARBON R R16J-150K 417341544T R604 CARBON R R16J-180 417341814T R605 CARBON R R16J-22 417342204T R609 CARBON R R16J-39K 417343934T R610 CARBON R R16J-560K 417345644T R611 CARBON R R16J-820K 417348244T R612 CARBON R R16J-39K 417343934T R613 CARBON R R16J-470K 417344744T R614...
  • Page 20 11/12 PAGE R624 CARBON R R16J-100K 417341044T R625 CARBON R R16J-180K 417341844T R626 CARBON R R16J-2.2M 417342254T R627 CARBON R R16J-680K 417346844T R628 CARBON R R16J-330K 417343344T R651 METAL O R RS1/2WBJ-12K 443521234T R901 METAL O R RS1WBJ-820 443628214T R902 METAL O R RS1WBJ-820 443628214T...
  • Page 21 12/12 PAGE...
  • Page 22 Sales & Product Planning Div. : 2-1, Nisshin-cho, Neyagawa-shi, OSAKA 572-8540, JAPAN Tel: 072-831-8023 Fax: 072-831-8163 ONKYO U.S.A. CORPORATION 18 Park Way, Upper Saddle River, N.J. 07458, U.S.A. Tel: 201-785-2600 Fax: 201-785-2650 http://www.us.onkyo.com/ ONKYO EUROPE ELECTRONICS GmbH Liegnitzerstrasse 6, 82194 Groebenzell, GERMANY Tel: +49-8142-4401-0 Fax: +49-8142-4401-555 http://www.eu.onkyo.com/...

This manual is also suitable for:

Htp-750x(b)Skb-750xSkm-750xsSkc-750xcSkf-750xfSkw-750x

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