SERVICE MANUAL AUDIO/VIDEO CONTROL RECEIVER MB170 2004 RX-7040B Area suffix J ----------------------------- U.S.A. C -------------------------- Canada TABLE OF CONTENTS PRECAUTION............... . . 1-3 SPECIFIC SERVICE INSTRUCTIONS .
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SPECIFICATION Amplifier Output Power Ω At Stereo Front ch 130 W per channel, min. RMS, driven into 8 , 20 Hz to 20 kHz, with no more than 0.08% total harmonic Operation distortion. Ω At Surround Front ch 130 W per channel, min. RMS, driven into 8 at 1 kHz, with no more than 0.8% total harmonic distortion.
SECTION 1 PRECAUTION Safety Precautions (1) This design of this product contains special hardware and voltmeter. many circuits and components specially for safety purpos- Move the resistor connection to each exposed metal es. For continued protection, no changes should be made part, particularly any exposed metal part having a return to the original design unless authorized in writing by the path to the chassis, and measure the AC voltage across...
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Importance administering point on the safety Power / fuse board 6.3A-125V Power trans 1 board Caution: For continued protection against risk of fire, replace only with same type 6.3A/125V for F1, 2A/125V for F61 and F62. This symbol specifies type of fast operating fuse. Precaution: Pour eviter risques de feux, remplacez le fusible de surete de F1 comme le meme type que 6.3A/125V, et 2A/125V pour F61 et F62.
SECTION 3 DISASSEMBLY Removing the top cover (See Fig.1) (1) From the right and left sides of the main body, remove the four screws A attaching the top cover. Top cover (2) From the back side of the main body, remove the three screws B attaching the top cover.
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Removing the rear panel (See Fig.4) • Prior to performing the following procedures, remove the top Strain relief cover. (1) From the back side of the main body, remove the strain re- lief from the rear panel in the direction of the arrow. (2) Remove the twenty-nine screws E, two screws F and three screws G attaching the rear panel.
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Removing the micon board (See Fig.7) • Prior to performing the following procedures, remove the top cover, rear panel, I/O board, tuner, DSP board, audio board, Main board video board and S-video board. CN831 (1) From the top side of the main body, disconnect the card on the micon board.
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Removing the main board (See Fig.9) • Prior to performing the following procedures, remove the top Front board(R) Front board(L) cover. Surround board Center board (1) From the top side of the main body, remove the tie bands CN881 Tie band bundling the wires.
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3.10 Removing the center board, surround back board, front boards (L/R) and surround boards (L/R) (See Figs.10 and 12) • Prior to performing the following procedures, remove the top Front board(R) Front board(L) cover and main board. (1) From the reverse side of the main board, remove the two screws P attaching the main board to the heat sink.
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3.13 Removing the power supply board Power supply board (See Fig.14) CN402 Card wire Headphone • Prior to performing the following procedures, remove the top jack board cover. (1) From the top side of the main body, disconnect the parallel wires from the connector CN55 on the power transformer...
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3.17 Removing the front key & system control board (See Figs.17 to 20) • Prior to performing the following procedures, remove the top Front panel assembly cover, front panel assembly, switch board and power switch Volume knob board. (1) Pull out the volume and jog knobs from the front side of the front panel assembly, remove the nut attaching the front key &...
SECTION 4 ADJUSTMENT Adjustment method Tuner section 1. Tuner range 87.5MHz to 108.0MHz 530kHz to 1710kHz Power amplifier section Adjustment of idling current Measurement location B2204-82205 (Lch), B2213-B2214 (Rch) Adjustment part VR787 (Lch), VR788 (Rch) Attention: This adjustment does not obtain a correct adjustment value immediately after the amplifier is used (state that an in- ternal temperature has risen).
SECTION 5 TROUBLESHOOTING Self-diagnose function This model incorporates the following self-diagnostic functions. 1. PROTECTOR • The PROTECTOR IN port detects errors such as speaker overcurrent and DC voltage output errors (Active: L). Immediately after detection, all relays are switched off and the alarm display as shown below (blinking at intervals of 0.5 sec. ON and 0.5 sec. OFF) is displayed in the lower part of the FL matrix.
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VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.MB170) Printed in Japan...
SCHEMATIC DIAGRAMS AUDIO/VIDEO CONTROL RECEIVER RX-7040B CD-ROM No.SML200403 Area suffix J ----------------------------- U.S.A. C -------------------------- Canada Contents Block diagram Standard schematic diagrams 2-23 to 33 Printed circuit boards No.MB170SCH COPYRIGHT 2004 VICTOR COMPANY OF JAPAN, LTD. 2004/3...
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In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the parts that are printed over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the " " mark nearby are critical for safety.
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PW10 PW20 PW11 PW17 PW12 PW13 PW14 PW15 PW16 PW26 PW18 PW28 PW19 PW29 PW30 PW40 3.3M 0.0047/100 KRC105M QSK0098-001 1SS133 KTD863/Y/ 1000/25 470/16 EP51 Parts are safety assurance parts. When replacing those parts make sure to use the specified one. SHEET 1...
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VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan (No.MB170SCH)
RX-7040B PARTS LIST [ RX-7040B ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix J ----------------------------- U.S.A. C -------------------------- Canada - Contents - 3- 2 Exploded view of general assembly and parts list (Block No.M1) 3- 5 Electrical parts list (Block No.01~06)
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RX-7040B Exploded view of general assembly and parts list Block No. Power tran Power trans board Relay board Headphone jack board Power switch board Power supply board Switch board Front key & System control board...
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RX-7040B Power trans board I/O board Power/Fuse board Stopper board Stopper Speaker board board Micon board Main board...
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RX-7040B General assembly Block No. [M][1][M][M] Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local QYSBSGY3008M SPECIAL SCREW 3mm x 8mm(x3) E406308-003 SPECIAL SCREW (x4) LV10469-029A FRONT PANEL LV43463-001A VOL KNOB ASSY...
RX-7040B Electrical parts list Main board Block No. [0][1][0][0] Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local R844 QRE141J-104Y C RESISTOR 100kΩ 1/4W J R845 QRE141J-823Y C RESISTOR 82kΩ 1/4W J...
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RX-7040B Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local IC404 GP1UM281XK IR DETECT UNIT 38kHz C404 NCB31EK-223X C CAPACITOR 0.022uF 25V K C406 NCB31HK-331X C CAPACITOR 330pF 50V K Q201...
RX-7040B Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local R396 NRSA63J-103X MG RESISTOR 10kΩ 1/16W J CN422 QJK031-041201 SIN ID C-B WIRE R397 NRSA63J-102X MG RESISTOR 1kΩ 1/16W J CN430...
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RX-7040B Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local Q905 KRC105M-T DIGI TRANSISTOR C981 QCBB1HK-331Y C CAPACITOR 330pF 50V K Q906 KRC105M-T DIGI TRANSISTOR C982 QCBB1HK-331Y C CAPACITOR 330pF 50V K...
RX-7040B Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local R992 NRSA63J-103X MG RESISTOR 10kΩ 1/16W J Q792 KTA1268/GL/-T TRANSISTOR R993 NRSA63J-622X MG RESISTOR 6.2kΩ 1/16W J Q1701 2SC2240-BL/AB/T TRANSISTOR R994...
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RX-7040B Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local C714 QCS31HJ-680Z C CAPACITOR 68pF 50V J C1941 QETN2AM-476Z E CAPACITOR 47uF 100V M C715 QCS31HJ-680Z C CAPACITOR 68pF 50V J...
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RX-7040B Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local R1723 QRE141J-332Y C RESISTOR 3.3kΩ 1/4W J R1912 QRE141J-563Y C RESISTOR 56kΩ 1/4W J R1724 QRE141J-332Y C RESISTOR 3.3kΩ 1/4W J...
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RX-7040B Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local Q1447 KRA104S-X DIGI TRANSISTOR C1494 NCB31HK-331X C CAPACITOR 330pF 50V K Q1490 KRA104S-X DIGI TRANSISTOR C1499 QCZ0202-155Z C CAPACITOR 1.5uF 25V Z...
RX-7040B Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local R1446 NRSA63J-103X MG RESISTOR 10kΩ 1/16W J Q2704 UN2114-X TRANSISTOR R1447 NRSA63J-474X MG RESISTOR 470kΩ 1/16W J Q2705 UN2114-X TRANSISTOR R1471...
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RX-7040B Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local C2349 QETN1HM-225Z E CAPACITOR 2.2uF 50V M C2812 QETN1AM-107Z E CAPACITOR 100uF 10V M C2381 NCF31CZ-104X C CAPACITOR 0.1uF 16V Z...
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RX-7040B Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local R2140 NRSA63J-104X MG RESISTOR 100kΩ 1/16W J R2423 NRSA63J-100X MG RESISTOR 10Ω 1/16W J R2141 NRSA63J-103X MG RESISTOR 10kΩ 1/16W J...
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RX-7040B Symbol No. Part No. Part Name Description Local R2714 NRSA63J-103X MG RESISTOR 10kΩ 1/16W J R2715 NRSA63J-103X MG RESISTOR 10kΩ 1/16W J R2716 NRSA63J-103X MG RESISTOR 10kΩ 1/16W J R2721 NRSA63J-103X MG RESISTOR 10kΩ 1/16W J R2722 NRSA63J-102X MG RESISTOR 1kΩ...
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RX-7040B Packing materials and accessories parts list Block No. A1, A2, A3, A4, A5, A7, A8 Packing and accessories Symbol No. Part No. Part Name Description Local Block No. [M][3][M][M] LV20948-002A PACKING PAD(R) Symbol No. Part No. Part Name...