Rotel RA-972 Service manual

Quality Uncompromised

Technical

Manual

Table of Contents

Specification......................................1

Parts List ...........................................2,3,4

Adustment..........................................4

Case Outlines....................................4

PCB Assembly ..................................5,6

Schematic Diagram...........................7~10

Specification

Continuous Power Output 60 watts/ch (20 - 20 kHz, <0.03 %, 8 ohms) Total Harmonic Distortion (20 Hz - 20k Hz) <0.03 % at rated power,

Intermodulation Distortion (60 Hz : 7 kHz, 4:1) <0.03 % at rated power,

Frequency Response - all inputs 10 Hz - 100 kHz, +1, -3 dB Dampning Factor (20 - 20,000 Hz, 8 ohms) 150 Input Sensitivity / Impedance 160 mV / 33 kOhms Input Overload 5 V Preamplifier Output / Impedance 1 V / 470 ohms

Tone Controls - Bass/Treble ± 6 dB at 100 Hz / 10 kHz

Signal to Noise Ratio(IHF"A"weighted) >95 dB Power Requirements

USA Version 115 volts, 60 Hz European version

Dimensions(W x H x D) 440 x 92 x 347 mm

Weight 6.5 kg / 14.3 lbs.

STEREO INTEGRATED AMPLIFIER

RA-972

1/2 power or 1 watt

230 volts, 50 Hz

173/8" x 55/8" x 1311/16"

SHINSEN-BLD. 4F 10-10 SHINSEN-CHO, SHIBUYA-KU, TOKYO 150-0045, JAPAN

Serial. NO. Beginning

Y-323A-00015C/S-S

Parts List-1

SYMBOL PARTS NO. DESCRIPTION SYMBOL PARTS NO. DESCRIPTION

X-1289-01PCBASSEMBLY

C401 041 UTES1J220-FB CAP,ELEC.63V22UF C501,502 041 50BGF10M CAP,ELEC.50V10UF C503,504 044 FSC160V470H CAP,STYROL 160V47PF C505,506 041 50BGF10M CAP,ELEC.50V10UF C507-512 044 50MSAN104J CAP,FILM 50V0.1UF

PJ5 066 4TR-2166#4 2P PINJACK Q401-406 032 TA1345 TRANSISTOR Q407-412 032 TC3399 TRANSISTOR Q619,620 033 TC3478A-LKU TRANSISTOR Q621,622 033 TA1376A-LKU TRANSISTOR

C513,514 042 TP50V472J CAP,MYLAR 50V4700PF C515,516 042 TP50V152J CAP,MYLAR 50V1500PF C517,518 041 50BGF10M CAP,ELEC.50V10UF C519,520 044 FSC160V101H CAP,STYROL 160V100PF C521,522 041 50BGF10M CAP,ELEC.50V10UF

C523,524 041 ECEA1EFS221 CAP,ELEC.25V220UF C527,528 041 ECEA1EFS221 CAP,ELEC.25V220UF C529 044 50MSAN104J CAP,FILM 50V0.1UF C613-616 044 FSC160V561H CAP,STYROL 160V560PF C617,618 044 KT18-2A104K CAP,FILM 100V0.1UF

C701,702 043 TC50VCH330 CAP,CERA.50V33PF C703 041 UTSS1H010-FB CAP,ELEC.50V1UF C704 044 KT18-2A104K CAP,FILM 100V0.1UF C705 041 UTSS0J222 CAP,ELEC.6.3V2200UF C707-709 043 TC50V103 CAP,CERA.50V0.01UF

C710 041 UTSS1E470-FB CAP,ELEC.25V47UF C901-904 043 TC500V103 CAP,CERA.500V0.01UF C905,906 041 ALN20S1073DD CAP,ELEC.50V10000UF C907,908 041 ECEA1EFS101 CAP,ELEC.25V100UF C909,910 041 ECEA1EFS471 CAP,ELEC.25V470UF

C914,915 043 TC500V103 CAP,CERA.500V0.01UF C916,917 041 UTES1J471 CAP,ELEC.63V470UF C918,919 041 UTSS1V101-FB CAP,ELEC.35V100UF C920 041 UTSS1A101-FB CAP,ELEC.10V100UF C921,922 041 UTSS1E101-FB CAP,ELEC.25V100UF

Q623,624 033 C3902-RS TRANSISTOR Q625,626 033 A1507-RS TRANSISTOR Q639 032 TC536-FG TRANSISTOR Q901 033 D600-EF TRANSISTOR Q902 033 B631-EF TRANSISTOR

Q903 033 D600-EF TRANSISTOR Q904 032 TD863-EF TRANSISTOR Q905 032 TC536-FG TRANSISTOR Q906 033 TA1016-FG TRANSISTOR Q907,908 032 TC3708-ST TRANSISTOR

Q909 032 TC536-FG TRANSISTOR R401-404 054 TMK2001KFECZ R,METAL 1% 1K R405 054 CR14-332J-A R,CARBON 3.3K R501,502 054 EE10-151 R,METAL 150R R503,504 054 EE10-104 R,METAL 100K

R505,506 054 TMK2680RFECZ R,METAL 1% 680R R507,508 054 TMK203K9FECZ R,METAL 1% 3.9K R509,510 054 TMK2100KFECZ R,METAL 1% 100K R511,512 054 TMK202K2FECZ R,METAL 1% 2.2K R513,514 054 TMK2002KFECZ R,METAL 1% 2K

R515,516 054 TMK2022KFECZ R,METAL 1% 22K R517-520 054 TMK201K5FECZ R,METAL 1% 1.5K R521,522 054 TMK2015KFECZ R,METAL 1% 15K R523,524 054 TMK2100KFECZ R,METAL 1% 100K R525,526 054 TMK2150RFECZ R,METAL 1% 150R

D401-406 034 T1N4148-86 DIODE D609-612 034 T1N4003-TB DIODE D615-617 034 T1N4148-86 DIODE D722 034 T1N4148-86 DIODE D723 034 TRD5.6JST1 ZENER DIODE

D724 034 T1N4148-86 DIODE D726-729 034 T1N4148-86 DIODE D901 034 BR84 BRIDGE DDIODE D902,903 034 T1N4003-TB DIODE D904-906 034 T1N4148-86 DIODE

D907,908 034 TRD16JST1 ZENER DIODE D909 034 TRD12JST1 ZENER DIODE F601-604 036 5ST6.3 MINI FUSE 250VT6.3A IC501 031 OPA2604AP IC IC502 031 NJM2114D IC

IC701 031 TMP47C400BN-1 IC TMP47C400BN-1A57 IC702 031 TC74HC595AP IC IC703 031 LB1641 IC IC901 031 NJM7805FA IC PJ1-4 066 4TR-2408#3 4P PINJACK

R527,528 054 TMK201K2FECZ R,METAL 1% 1.2K R529,530 054 TMK2002KFECZ R,METAL 1% 2K R531,532 054 TMK2100KFECZ R,METAL 1% 100K R533,534 054 TMK2470RFECZ R,METAL 1% 470R R631,632 054 TMK2001KFECZ R,METAL 1% 1K

R633,634 054 TMK2047RFECZ R,METAL 1%47R R637-644 054 NIR2-0.22R R,METAL 2W 0.22R R645,646 054 2WS10JF R,METAL 2W 10R R653-656 054 TMK2220RFECZ R,METAL 1% 220R R678 053 CR14-332J-A R,CARBON 3.3K

R680 053 CR14-104J-A R,CARBON 100K R701,702 053 CR14-472J-A R,CARBON 4.7K R703,704 053 CR14-104J-A R,CARBON 100K R705 053 CR14-124J-A R,CARBON 120K R706 053 CR14-473J-A R,CARBON 47K

R707 053 CR14-102J-A R,CARBON 1K R709 053 CR16-100J-A R,CARBON 10R R711,712 053 CR16-104J-A R,CARBON 100K R713,714 053 CR14-104J-A R,CARBON 100K R715 053 CR14-472J-A R,CARBON 4.7K

Parts List-2

SYMBOL PARTS NO. DESCRIPTION SYMBOL PARTS NO. DESCRIPTION

R716 053 CR16-104J-A R,CARBON 100K R901,902 054 TMK203K3FECZ R,METAL 1% 3.3K R903 054 1WS820JF R,METAL 1W 820R R904 054 1WS1.2KJF R,METAL 1W 1.2K R905 053 CR14-472J-A R,CARBON 4.7K

R906 053 CR14-103J-A R,CARBON 10K R907 054 1WS820JF R,METAL 1W 820R R908 054 1WS68JF R,METAL 1W 68R R909 053 CR14-333J-A R,CARBON 33K R910 053 CR14-223J-A R,CARBON 22K

R911 053 CR14-104J-A R,CARBON 100K R912 054 1WS10KJF R,METAL 1W 10K R913 053 CR14-473J-A R,CARBON 47K R914 053 CR14-683J-A R,CARBON 68K R915,916 053 CR14-223J-A R,CARBON 22K

R917 053 CR14-332J-A R,CARBON 3.3K R918 053 CR14-103J-A R,CARBON 10K R919 053 CR14-562J-A R,CARBON 5.6K R920 053 CR14-154J-A R,CARBON 150K R921 053 CR14-104J-A R,CARBON 100K

RY401-406 063 V23106-24 RELAY RY601,602 063 DH2TU-24 RELAY RY603 063 V23106-24 RELAY RY901 063 DG1U-24 RELAY RY902 063 DH2U-24 RELAY

S401 062 C-4174A17 S501 062 4TR-2780 ROTARY SWITCH(TONE) SP1,2 067 C-4493A00 SPEAKER TERMINAL TH901 034 TTC-503 THERMISTOR VR501 051 C-4170A27

ROTARY SWITCH(RECORDING)

VARIABLE RESISTOR(VOLUME)

R605-612 054 TMK201K5FECZ R,METAL 1% 1.5K R613-616 054 TMK2220RFECZ R,METAL 1% 220R R617,618 054 TMF1/4-5600F R,MRS25 560R R619,620 054 TMK2047KFECZ R,METAL 1% 47K R621-624 054 TMK2100RFECZ R,METAL 1% 100R

R625,626 054 TMF1/4-6801F R,MRS25 6.8K R627,628 054 TMF1/4-1001F R,MRS25 1K R629,630 054 TMF1/4-3302F R,MRS25 33K R635,636 054 TMK2012KFECZ R,METAL 1% 12K R651,652 054 TMF3300 R,METAL 330R VR601,602 051 SFR001-222 SEMI-FIXED RESISTOR 2.2K

X-1289-04 PCB ASSEMBLY

D707-712 034 T1N4148-86 DIODE D714-720 034 T1N4148-86 DIODE S701 062 C-4174A13

X-1289-05 PCB ASSEMBLY

D701-706 034 LN38GCPP LED R710 053 CR16-102J-A R,CARBON 1K

X-1289-06 PCB ASSEMBLY

HJ1 065 C-3399#1 PHONE JACK R647-650 054 TMK2680RFECZ R,METAL 1% 680R R667,668 054 1WS1.2KJF R,METAL 1W 1.2K S601 062 C-4174A19

X-1289-07 PCB ASSEMBLY

C706 041 UTSS1E470-FB CAP,ELEC.25V47UF IC704 031 SBX1810-52 IC R708 053 CR16-101J-A R,CARBON 100R

X-1289-08 PCB ASSEMBLY

HJ2 065 YKB21-5103A MINI JACK

ROTARY SWITCH(LISTENING)

ROTARY SWITCH(SPEAKERS)

VR502,503 053 4TR-2774 VARIABLE RESISTOR(TONE) X701 023 CSA4.19MHZ CERAMIC RESONATOR

069 C-3417A FUSE CLIP

X-1289-02,03PCBASSEMBLY

C601,602 041 50BGF4R7M CAP,ELEC.50V4.7UF C603,604 044 FSC160V331H CAP,STYROL 160V330PF C605,606 044 FSC160V471H CAP,STYROL 160V470PF C607,608 041 25BGF100M CAP,ELEC.25V100UF C609,610 044 FSC160V331H CAP,STYROL 160V330PF

C611,612 041 50BGF10M CAP,ELEC.50V10UF C619,620 044 FSC160V221H CAP,STYROL 160V220PF D601-608 034 T1N4148-86 DIODE Q601-604 033 TC2362-FG TRANSISTOR Q605-610 033 TA1016-FG TRANSISTOR

Q611,612 033 TC2362-FG TRANSISTOR Q613,614 033 TA1208-RST TRANSISTOR Q615,616 033 TC2910-RST TRANSISTOR R601,602 054 TMK2560RFECZ R,METAL 1% 560R R603,604 054 TMK2047KFECZ R,METAL 1% 47K

X-1289-09 PCB ASSEMBLY

C911 044 DE1307E472M SPARK KILLER S901 061 C-4176A08 POWER SWITCH

X-1289-14 PCB ASSEMBLY

ACO1 069 C-4497A00 AC OUTLET

HEAT SINKER ASSEMBLY

Q617,618 032 D600-EF TRANSISTOR Q627-630 033 D1047-DE POWER TRANSISTOR Q631-634 033 B817-DE POWER TRANSISTOR

OTHERS

011 FP-514 FRONT PANEL ASSY 012 QT4-09A00T KNOB 25F (LISTENING)

012 SD4-16A00 PUSH KNOB 12F 012 3TQU-5 KNOB ASSY 33F 012 4TR-3134 KNOB 25F (RECORDING) 012 4TR-3136 KNOB 13F 012 4TSA-7 KNOB 11F 014 C-4550A09 UPPER COVER 014 SZ3-08A00 BOTTOM BOARD

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Rotel RA-972 Service manual

Specifications and Main Features

Frequently Asked Questions

User Manual