Rotel RC-972 Service manual

Quality Uncompromised

Wiring Diagram

Technical

STEREO CONTROL AMPLIFIER

RC-972

Manual

Table of Contents

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

Wiring Diagram ................................2

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

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

Schematic Diagram..........................7,8

Specification

Total Harmonic Distortion (20-20 kHz) ≤ 0.004%. Intermodulation Distortion (60 Hz: 7 kHz = 4:1) ≤ 0.004%. Usable Headphone Impedance 8- 2,000 ohms Input Sensitivity / Impedance 50 mV / 24 kohms Output Sensitivity / Impedance 1.0 Volt / 100 ohms Frequency Response 4 Hz-100 kHz + 0, -3 dB Tone Control Range Bass ± 6 dB (100 Hz) Treble ± 6 dB (10 kHz) Signal to Noise Ratio (IHF, A Network) 95 dB Power Requirement 115 Volts 60 Hz or 230 Volts 50 Hz Power Consumption 10 Watts Dimensions (overall W, H, D) 440 x 72 x 286 mm

17.37 x 2.87 x 11.25” Net Weight 4.3 kg / 9.46 lb.

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

Serial. NO. Begining

Parts List

SYMBOL PARTS NO. DESCRIPTION SYMBOL PARTS NO. DESCRIPTION

X-1246-01 PCB ASSEMBLY

C515,516 041 ECEA1EFS101 C517,518 044 LFSC160V101H C519,520 041 GS50V100-B C521,522 041

C523,524 041 50BGF10M

C525,526 044 LFSC160V470H C527,528 041 50BGF10M C531,532 041 ECEA1EFS221 C701 041 GS50V010–B C703,704 043 LTC50VCH330

C705 042 LTP50V104J C706 041 GS6.3V222–D C707 042 LTP50V103J C708--710 042 LTP50V104J C901,902 041 GS25V101–B

C905,906 041

C907,908 041 35BGF470M C909 041 GS25V221–B C910 041 GS25V101--B C911 041 GS35V221–D

C912 041 GS50V100–B C913 041 GS35V102–D C914,915 043 LTC500V103 C916,917 041 50RSP4700A C918–921 043 LTC500V103

C922 041 GS25V101–B C923 041 GS50V010–B C924 041 GS25V471–D C925-928 043 LTC500V103 C929,930 041 ECEA1EFS101

D501,502 034 TRD15JST1 D701–715 034 LT1N4148–86 D716 034 TRD5.6JST1 D901--904 034 LT1N4148–86 D905,906 034 TRDl8JST1

D907 034 TRD10JST1 D908 034 LT1N4003–TB D910 034 LT1N4148–86 D911,912 034 LT1N4003–TB D913 034 LT1N4148–86

D914--922 034 LT1N4003–TB F901–903 036 5ST500 IC501 031 LTC9163AN IC502 031 LAD712JN IC503 031 OPA2604AP

IC701 031 LTMP47C400BN IC702 031 LTC9173P IC703 031 LLB1641 IC901 031 LNJM7805FA PJI 066 L4TR–2166#4

TUVX1E470MDA1TA

TUVX1E101MEA1TA

CAP, ELEC. 25V100UF CAP,

STYROL 160V100PF CAP, ELEC. 50V10UF CAP, ELEC. 25V47UF CAP, ELEC. 50V10UF

CAP, STYROL 160V47PF CAP, ELEC. 50V10UF CAP, ELEC. 25V220UF CAP, ELEC. 50V1UF CAP, CERA. 50V33PF

CAP, MYLAR 50V0.1UF CAP, ELEC. 6.3V2200UF CAP, MYLAR 50V0. 01UF CAP, MYLAR 50V0.1UF CAP, ELEC. 25V100UF

CAP, ELEC. 25V100F CAP, ELEC. 35V470UF CAP, ELEC. 25V220UF CAP, ELEC. 25V100UF CAP, ELEC. 35V220UF

CAP, ELEC. 50V10UF CAP, ELEC. 35V1000UF CAP, CERA. 500V0.01UF CAP, ELEC. 50V4700UF CAP, CERA. 500V0.01UF

CAP, ELEC. 25V100UF CAP, ELEC. 50V1UF CAP, ELEC. 25V470UF CAP, CERA. 500V0.0lUF CAP, ELEC. 25V100UF

ZENER DIODE DIODE ZENER DIODE DIODE ZENER DIODE

ZENER DIODE DIODE DIODE DIODE DIODE

DIODE MINI FUSE 250V500mA IC IC IC

IC IC IC IC 1P PINJACK

PJ2–4 066 L4TR–2672#1 PJ5 066 L4TR–2672#3 Q901 033 LT2SC3708AA–ST Q902 033 LT2SA1450AA–ST Q903 032 L2SB631K–EF

Q904 032 LT2SC536KAA–FG Q905, 906 032 LT2SA608KAA–FG Q907 032 L2SD600K–EF Q908 032 LT2SC536KAA–FG Q909 032 L2SD600K–EF

Q910–912 032 LT2SC536KAA–FG Q913 032 L2SB631K–EF R501, 502 054 LTMK2470RFECZ R503, 504 054 LTMK2027KFECZ R505, 506 054 LTMK2470RFECZ

R507, 508 054 LTMK2027KFECZ R509, 510 054 LTMK2470RFECZ R511, 512 054 LTMK2027KFECZ R513, 514 054 LTMK2470RFECZ R515, 516 054 LTMK2027KFECZ

R517, 518 054 LTMK2470RFECZ R519, 520 054 LTMK2027KFECZ R521, 522 054 LTMK2470RFECZ R523, 524 054 LTMK2027KFECZ R525, 526 034 LTMF1001

R529, 530 054 LTMF4700 R531, 532 054 LTMK2470RFECZ R533, 534 054 LTMK2220KFECZ R537, 538 054 LTMK2100RFECZ R539, 540 054 LEE10–101

R541, 542 054 LEE10–104 R543, 544 054 LTMK2470RFECZ R545, 546 054 LTMK202K7FECZ R549, 550 054 LTMK2100KFECZ R551, 552 054 LTMK2100RFECZ

R701, 702 053 CR14–104J–A R703 053 CR14–473J–A R704 053 CR14–104J–A R706–713 053 CR14–104J–A R714 053 CR14–681J–A

R715 053 CR14–100J–A R716–718 053 CR14–472J–A R901, 902 054 LTMF2701 R903, 904 054 LTMF1502 R905 054 LTMF2201

R906 053 CR14–821J–A R907 053 CR14–101J–A R908 054 1WS10JF R909 054 LTMF3301 R910, 911 054 LTMF1000

4P PINJACK 4P PINJACK TRANSISTOR TRANSISTOR TRANSISTOR

TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR

TRANSISTOR TRANSISTOR R, METAL l% 470R R, METAL 1% 27K R, METAL 1% 470R

R, METAL 1% 27K R, METAL l% 470R R, METAL 1% 27K R, METAL 1% 470R R, METAL 1% 27K

R, METAL 1% 470R R, METAL 1% 27K R, METAL l% 470R R, METAL 1% 27K R, METAL 1K

R, METAL 470R R, METAL 1% 470R R, METAL 1% 220K R, METAL 1% 100R R, METAL 100R

R, METAL 100K R, METAL 1% 470R R, METAL 1% 2. 7K R, METAL 1% 100K R, METAL 1% 100R

R, CARBON 100K R, CARBON 47K R, CARBON 100K R, CARBON 100K R, CARBON 680R

R, CARBON 10R R, CARBON 4.7K R, METAL 2.7K R, METAL 15K R, METAL 2.2K

R, CARBON 820R R, CARBON 100R R, METAL 1W 10R R, METAL 3.3K R, METAL 100R

SYMBOL PARTS NO. DESCRIPTION SYMBOL PARTS NO. DESCRIPTION

R912, 913 054 LTMF1002 R914 054 1WS220JF R915, 916 054 LTMF1002 R917 054 LTMF1003 R918 054 LTMF4703

R919 054 LTMF1002 R920 054 LTMF4702 R921 054 1WS100JF R922 054 1WS82JF R923 054 1WS470JF

R924, 925 054 LTMF2700 RY901 063 EG2–24NU RY902 063 DG24D2–OS(M) S501 062 4TR–3152 VR501 051 C–4170A27

X701 023 LCSA4. 19MHZ CON1 068 PS–1101–32

069 C–3417A

R, METAL 10K R, METAL 1W 220R R, METAL 10K R, METAL 100K R, METAL 470K

R, METAL 10K R, METAL 47K R, METAL 1W 100R R, METAL 1W 82R R, METAL 1W 470R

R, METAL 270R RELAY RELAY ROTALY SWITCH(MONITOR) VARIABLE RESISTOR

CERAMIC RESONATOR CONNECTOR BASE FUSE CLIP

R629, 630 054 LTMF1001 R631, 632 054 LTMF1002 R633, 634 054 LTMF1500 R635, 636 054 LTMF4702 S601 061 L4TR–2947

S602 062 4TR–2780 VR601,602 051 4TR–2774

X–1249–02 PCB ASSEMBLY

C951 044 DE7150F472M D951 034 LT1N4148–86 RY951 063 DG24D1–O(M)

069 C–4372A00

X–1249–03 PCB ASSEMBLY

S803 062 C–4174A13

X–1249–04 PCB ASSEMBLY

D801–805 034 LN38GCPP

R, METAL IK R, METAL 10K R, METAL 150R R, METAL 47K PUSH SWITCII

ROTALY SWITCH(TONE) VARIABLE RESISTOR 20KBX2

SPARK KILLER DIODE RELAY AC OUTLET for STD

ROTALYSWITCH (FUNCTION)

LED

OTHERS

X-1246-02 PCB ASSEMBLY

C801 041 GS25V10l IC801 031 SBX1910–52

X-1249-01 PCB ASSEMBLY

C601, 602 042 LTP50V104J

C607, 608 041 GS50V100–B C609, 610 044 LS50Vl500PJ C611, 612 044 LS50V47PJ C613, 614 041 GS50V100–B C615, 616 042 LTP50V472J

C617, 618 041 ECEA1EFS10l C619, 620 041 GS25V101–B C623, 624 044 LS50V47PJ C625, 626 041 GS50V4R7–B C627, 628 042 LTP50V103J

IC601 031 NJM2114D IC602 031 LNJM4556AD JK601 065 C–3399#3 R601,602 054 LTMF2201 R603, 604 054 LTMF2001

R605, 606 054 LTMF2202 R607, 608 054 LTMF1500 R609, 610 054 LTMF1502 R611--614 054 LTMF1501 R615, 616 054 LTMF1003

R617, 618 054 LTMF1201 R619, 620 054 LTMF2201 R623, 624 054 LTMF1003 R625, 626 054 LTMF1000 R627, 628 054 LTMF1003

CAP, ELEC. 25V100UF IC

CAP, MYLAR 50V0.1UF

CAP, ELEC. 50V10UF CAP, STYROL 50V1500PF CAP, STYROL 50V47PF CAP, ELEC. 50V10UF CAP, MYLAR 50V4700PF

CAP, ELEC. 25V100UF CAP, ELEC. 25V100UF CAP, STYROL 50V47PF CAP, ELEC. 50V4.7UF CAP, MYLAR 50V0.01UF

IC IC PHONE JACK R, METAL 2.2K R, METAL 2K

R, METAL 22K R, METAL 150R R, METAL 15K R, METAL l.5K R, METAL 100K

R, METAL 1.2K R, METAL 2.2K R, METAL 100K R, METAL 100R R, METAL 100K

011 TFP–806

012 L3TQU–5 012 L4TQF–15 012 LQT4–09A00T 012 4TR–3134 012 4TR–3136

014 C–4550A02 014 L4TR–2797#2 014 4TQN–12B#4 015 RP–337 019 L4TSH–19#2

022 T–1056N01 069 S2–729T–100 072 L4TR–670#4 072 LC–3763 072 C–4572A01

072 L4TR–1037 081 RS3–05A00 081 TZ–164–1 092 LRR–927

FRONT PANEL ASSY

KNOB ASSY 33F POWER BUTTON 14X14 KNOB 25F (FUNCTION) KNOB Z5F (MONITOR) KNOB 13F

UPPER COVER ORNAMENT SIDE BOARD BOTTOM BOARD REAR CHASSIS PLASTIC FOOT 50F

POWER TRANSFORMER AC OUTLET for CEE AC CORD for STD AC CORD for AUSTRALIA AC CORD for UK

AC CORD for CEE INSIDE CARTON STYROL SIDE MOULDING REMOTE UNIT

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