Quality Uncompromised
®
Technical
Manual
STEREO CONTROL AMPLIFIER
RC-972
Table of Contents |
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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 |
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8- 2,000 ohms |
Input Sensitivity / Impedance |
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50 mV / 24 kohms |
Output Sensitivity / Impedance |
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1.0 Volt / 100 ohms |
Frequency Response |
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4 Hz-100 kHz + 0, -3 dB |
Tone Control Range |
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± 6 dB (100 Hz) |
Bass |
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Treble |
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± 6 dB (10 kHz) |
Signal to Noise Ratio |
(IHF, A Network) |
95 dB |
Power Requirement |
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115 Volts 60 Hz or |
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230 Volts 50 Hz |
Power Consumption |
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10 Watts |
Dimensions (overall W, H, D) |
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440 x 72 x 286 mm |
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17.37 x 2.87 x 11.25” |
Net Weight |
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4.3 kg / 9.46 lb. |
Serial. NO.
BUNZAN-SHINSEN-BLD. 4F 10-10 SHINSEN-CHO, SHIBUYA-KU,
Begining
TOKYO 150-0045, JAPAN
2
Parts List |
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Parts List |
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SYMBOL |
PARTS NO. |
DESCRIPTION |
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SYMBOL |
PARTS NO. |
DESCRIPTION |
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SYMBOL |
PARTS NO. |
DESCRIPTION |
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SYMBOL |
PARTS NO. |
DESCRIPTION |
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X-1246-01 PCB ASSEMBLY |
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C515,516 |
041 |
ECEA1EFS101 |
CAP, ELEC. 25V100UF |
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PJ2–4 |
066 |
L4TR–2672#1 |
4P PINJACK |
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R912, 913 |
054 |
LTMF1002 |
R, METAL 10K |
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R629, 630 |
054 |
LTMF1001 |
R, METAL IK |
C517,518 |
044 |
LFSC160V101H |
CAP, STYROL 160V100PF |
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PJ5 |
066 |
L4TR–2672#3 |
4P PINJACK |
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R914 |
054 |
1WS220JF |
R, METAL 1W 220R |
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R631, 632 |
054 |
LTMF1002 |
R, METAL 10K |
C519,520 |
041 |
GS50V100-B |
CAP, ELEC. 50V10UF |
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Q901 |
033 |
LT2SC3708AA–ST |
TRANSISTOR |
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R915, 916 |
054 |
LTMF1002 |
R, METAL 10K |
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R633, 634 |
054 |
LTMF1500 |
R, METAL 150R |
C521,522 |
041 |
TUVX1E470MDA1TA |
CAP, ELEC. 25V47UF |
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Q902 |
033 |
LT2SA1450AA–ST |
TRANSISTOR |
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R917 |
054 |
LTMF1003 |
R, METAL 100K |
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R635, 636 |
054 |
LTMF4702 |
R, METAL 47K |
C523,524 |
041 |
50BGF10M |
CAP, ELEC. 50V10UF |
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Q903 |
032 |
L2SB631K–EF |
TRANSISTOR |
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R918 |
054 |
LTMF4703 |
R, METAL 470K |
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S601 |
061 |
L4TR–2947 |
PUSH SWITCII |
C525,526 |
044 |
LFSC160V470H |
CAP, STYROL 160V47PF |
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Q904 |
032 |
LT2SC536KAA–FG |
TRANSISTOR |
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R919 |
054 |
LTMF1002 |
R, METAL 10K |
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S602 |
062 |
4TR–2780 |
ROTALY SWITCH(TONE) |
C527,528 |
041 |
50BGF10M |
CAP, ELEC. 50V10UF |
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Q905, 906 |
032 |
LT2SA608KAA–FG |
TRANSISTOR |
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R920 |
054 |
LTMF4702 |
R, METAL 47K |
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VR601,602 |
051 |
4TR–2774 |
VARIABLE RESISTOR 20KBX2 |
C531,532 |
041 |
ECEA1EFS221 |
CAP, ELEC. 25V220UF |
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Q907 |
032 |
L2SD600K–EF |
TRANSISTOR |
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R921 |
054 |
1WS100JF |
R, METAL 1W 100R |
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X–1249–02 PCB ASSEMBLY |
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C701 |
041 |
GS50V010–B |
CAP, ELEC. 50V1UF |
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Q908 |
032 |
LT2SC536KAA–FG |
TRANSISTOR |
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R922 |
054 |
1WS82JF |
R, METAL 1W 82R |
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C703,704 |
043 |
LTC50VCH330 |
CAP, CERA. 50V33PF |
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Q909 |
032 |
L2SD600K–EF |
TRANSISTOR |
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R923 |
054 |
1WS470JF |
R, METAL 1W 470R |
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C951 |
044 |
DE7150F472M |
SPARK KILLER |
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D951 |
034 |
LT1N4148–86 |
DIODE |
C705 |
042 |
LTP50V104J |
CAP, MYLAR 50V0.1UF |
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Q910–912 |
032 |
LT2SC536KAA–FG |
TRANSISTOR |
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R924, 925 |
054 |
LTMF2700 |
R, METAL 270R |
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RY951 |
063 |
DG24D1–O(M) |
RELAY |
C706 |
041 |
GS6.3V222–D |
CAP, ELEC. 6.3V2200UF |
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Q913 |
032 |
L2SB631K–EF |
TRANSISTOR |
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RY901 |
063 |
EG2–24NU |
RELAY |
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069 |
C–4372A00 |
AC OUTLET for STD |
C707 |
042 |
LTP50V103J |
CAP, MYLAR 50V0. 01UF |
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R501, 502 |
054 |
LTMK2470RFECZ |
R, METAL l% 470R |
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RY902 |
063 |
DG24D2–OS(M) |
RELAY |
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C708--710 |
042 |
LTP50V104J |
CAP, MYLAR 50V0.1UF |
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R503, 504 |
054 |
LTMK2027KFECZ |
R, METAL 1% 27K |
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S501 |
062 |
4TR–3152 |
ROTALY SWITCH(MONITOR) |
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X–1249–03 PCB ASSEMBLY |
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C901,902 |
041 |
GS25V101–B |
CAP, ELEC. 25V100UF |
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R505, 506 |
054 |
LTMK2470RFECZ |
R, METAL 1% 470R |
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VR501 |
051 |
C–4170A27 |
VARIABLE RESISTOR |
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S803 |
062 |
C–4174A13 |
ROTALYSWITCH (FUNCTION) |
C905,906 |
041 |
TUVX1E101MEA1TA |
CAP, ELEC. 25V100F |
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R507, 508 |
054 |
LTMK2027KFECZ |
R, METAL 1% 27K |
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X701 |
023 |
LCSA4. 19MHZ |
CERAMIC RESONATOR |
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X–1249–04 PCB ASSEMBLY |
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C907,908 |
041 |
35BGF470M |
CAP, ELEC. 35V470UF |
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R509, 510 |
054 |
LTMK2470RFECZ |
R, METAL l% 470R |
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CON1 |
068 |
PS–1101–32 |
CONNECTOR BASE |
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D801–805 |
034 |
LN38GCPP |
LED |
C909 |
041 |
GS25V221–B |
CAP, ELEC. 25V220UF |
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R511, 512 |
054 |
LTMK2027KFECZ |
R, METAL 1% 27K |
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069 |
C–3417A |
FUSE CLIP |
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C910 |
041 |
GS25V101--B |
CAP, ELEC. 25V100UF |
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R513, 514 |
054 |
LTMK2470RFECZ |
R, METAL 1% 470R |
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OTHERS |
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C911 |
041 |
GS35V221–D |
CAP, ELEC. 35V220UF |
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R515, 516 |
054 |
LTMK2027KFECZ |
R, METAL 1% 27K |
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X-1246-02 PCB ASSEMBLY |
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011 |
TFP–806 |
FRONT PANEL ASSY |
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C912 |
041 |
GS50V100–B |
CAP, ELEC. 50V10UF |
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R517, 518 |
054 |
LTMK2470RFECZ |
R, METAL 1% 470R |
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C801 |
041 |
GS25V10l |
CAP, ELEC. 25V100UF |
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012 |
L3TQU–5 |
KNOB ASSY 33F |
C913 |
041 |
GS35V102–D |
CAP, ELEC. 35V1000UF |
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R519, 520 |
054 |
LTMK2027KFECZ |
R, METAL 1% 27K |
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IC801 |
031 |
SBX1910–52 |
IC |
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012 |
L4TQF–15 |
POWER BUTTON 14X14 |
C914,915 |
043 |
LTC500V103 |
CAP, CERA. 500V0.01UF |
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R521, 522 |
054 |
LTMK2470RFECZ |
R, METAL l% 470R |
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012 |
LQT4–09A00T |
KNOB 25F (FUNCTION) |
C916,917 |
041 |
50RSP4700A |
CAP, ELEC. 50V4700UF |
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R523, 524 |
054 |
LTMK2027KFECZ |
R, METAL 1% 27K |
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X-1249-01 PCB ASSEMBLY |
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012 |
4TR–3134 |
KNOB Z5F (MONITOR) |
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C918–921 |
043 |
LTC500V103 |
CAP, CERA. 500V0.01UF |
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R525, 526 |
034 |
LTMF1001 |
R, METAL 1K |
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C601, 602 |
042 |
LTP50V104J |
CAP, MYLAR 50V0.1UF |
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012 |
4TR–3136 |
KNOB 13F |
C922 |
041 |
GS25V101–B |
CAP, ELEC. 25V100UF |
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R529, 530 |
054 |
LTMF4700 |
R, METAL 470R |
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C607, 608 |
041 |
GS50V100–B |
CAP, ELEC. 50V10UF |
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014 |
C–4550A02 |
UPPER COVER |
C923 |
041 |
GS50V010–B |
CAP, ELEC. 50V1UF |
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R531, 532 |
054 |
LTMK2470RFECZ |
R, METAL 1% 470R |
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C609, 610 |
044 |
LS50Vl500PJ |
CAP, STYROL 50V1500PF |
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014 |
L4TR–2797#2 |
ORNAMENT SIDE BOARD |
C924 |
041 |
GS25V471–D |
CAP, ELEC. 25V470UF |
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R533, 534 |
054 |
LTMK2220KFECZ |
R, METAL 1% 220K |
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C611, 612 |
044 |
LS50V47PJ |
CAP, STYROL 50V47PF |
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014 |
4TQN–12B#4 |
BOTTOM BOARD |
C925-928 |
043 |
LTC500V103 |
CAP, CERA. 500V0.0lUF |
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R537, 538 |
054 |
LTMK2100RFECZ |
R, METAL 1% 100R |
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C613, 614 |
041 |
GS50V100–B |
CAP, ELEC. 50V10UF |
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015 |
RP–337 |
REAR CHASSIS |
C929,930 |
041 |
ECEA1EFS101 |
CAP, ELEC. 25V100UF |
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R539, 540 |
054 |
LEE10–101 |
R, METAL 100R |
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C615, 616 |
042 |
LTP50V472J |
CAP, MYLAR 50V4700PF |
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019 |
L4TSH–19#2 |
PLASTIC FOOT 50F |
D501,502 |
034 |
TRD15JST1 |
ZENER DIODE |
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R541, 542 |
054 |
LEE10–104 |
R, METAL 100K |
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C617, 618 |
041 |
ECEA1EFS10l |
CAP, ELEC. 25V100UF |
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022 |
T–1056N01 |
POWER TRANSFORMER |
D701–715 |
034 |
LT1N4148–86 |
DIODE |
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R543, 544 |
054 |
LTMK2470RFECZ |
R, METAL 1% 470R |
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C619, 620 |
041 |
GS25V101–B |
CAP, ELEC. 25V100UF |
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069 |
S2–729T–100 |
AC OUTLET for CEE |
D716 |
034 |
TRD5.6JST1 |
ZENER DIODE |
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R545, 546 |
054 |
LTMK202K7FECZ |
R, METAL 1% 2. 7K |
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C623, 624 |
044 |
LS50V47PJ |
CAP, STYROL 50V47PF |
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072 |
L4TR–670#4 |
AC CORD for STD |
D901--904 |
034 |
LT1N4148–86 |
DIODE |
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R549, 550 |
054 |
LTMK2100KFECZ |
R, METAL 1% 100K |
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C625, 626 |
041 |
GS50V4R7–B |
CAP, ELEC. 50V4.7UF |
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072 |
LC–3763 |
AC CORD for AUSTRALIA |
D905,906 |
034 |
TRDl8JST1 |
ZENER DIODE |
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R551, 552 |
054 |
LTMK2100RFECZ |
R, METAL 1% 100R |
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C627, 628 |
042 |
LTP50V103J |
CAP, MYLAR 50V0.01UF |
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072 |
C–4572A01 |
AC CORD for UK |
D907 |
034 |
TRD10JST1 |
ZENER DIODE |
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R701, 702 |
053 |
CR14–104J–A |
R, CARBON 100K |
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IC601 |
031 |
NJM2114D |
IC |
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072 |
L4TR–1037 |
AC CORD for CEE |
D908 |
034 |
LT1N4003–TB |
DIODE |
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R703 |
053 |
CR14–473J–A |
R, CARBON 47K |
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IC602 |
031 |
LNJM4556AD |
IC |
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081 |
RS3–05A00 |
INSIDE CARTON |
D910 |
034 |
LT1N4148–86 |
DIODE |
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R704 |
053 |
CR14–104J–A |
R, CARBON 100K |
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JK601 |
065 |
C–3399#3 |
PHONE JACK |
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081 |
TZ–164–1 |
STYROL SIDE MOULDING |
D911,912 |
034 |
LT1N4003–TB |
DIODE |
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R706–713 |
053 |
CR14–104J–A |
R, CARBON 100K |
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R601,602 |
054 |
LTMF2201 |
R, METAL 2.2K |
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092 |
LRR–927 |
REMOTE UNIT |
D913 |
034 |
LT1N4148–86 |
DIODE |
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R714 |
053 |
CR14–681J–A |
R, CARBON 680R |
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R603, 604 |
054 |
LTMF2001 |
R, METAL 2K |
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D914--922 |
034 |
LT1N4003–TB |
DIODE |
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R715 |
053 |
CR14–100J–A |
R, CARBON 10R |
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R605, 606 |
054 |
LTMF2202 |
R, METAL 22K |
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F901–903 |
036 |
5ST500 |
MINI FUSE 250V500mA |
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R716–718 |
053 |
CR14–472J–A |
R, CARBON 4.7K |
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R607, 608 |
054 |
LTMF1500 |
R, METAL 150R |
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IC501 |
031 |
LTC9163AN |
IC |
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R901, 902 |
054 |
LTMF2701 |
R, METAL 2.7K |
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R609, 610 |
054 |
LTMF1502 |
R, METAL 15K |
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IC502 |
031 |
LAD712JN |
IC |
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R903, 904 |
054 |
LTMF1502 |
R, METAL 15K |
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R611--614 |
054 |
LTMF1501 |
R, METAL l.5K |
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IC503 |
031 |
OPA2604AP |
IC |
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R905 |
054 |
LTMF2201 |
R, METAL 2.2K |
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R615, 616 |
054 |
LTMF1003 |
R, METAL 100K |
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IC701 |
031 |
LTMP47C400BN |
IC |
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R906 |
053 |
CR14–821J–A |
R, CARBON 820R |
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R617, 618 |
054 |
LTMF1201 |
R, METAL 1.2K |
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IC702 |
031 |
LTC9173P |
IC |
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R907 |
053 |
CR14–101J–A |
R, CARBON 100R |
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R619, 620 |
054 |
LTMF2201 |
R, METAL 2.2K |
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IC703 |
031 |
LLB1641 |
IC |
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R908 |
054 |
1WS10JF |
R, METAL 1W 10R |
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R623, 624 |
054 |
LTMF1003 |
R, METAL 100K |
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IC901 |
031 |
LNJM7805FA |
IC |
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R909 |
054 |
LTMF3301 |
R, METAL 3.3K |
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R625, 626 |
054 |
LTMF1000 |
R, METAL 100R |
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PJI |
066 |
L4TR–2166#4 |
1P PINJACK |
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R910, 911 |
054 |
LTMF1000 |
R, METAL 100R |
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R627, 628 |
054 |
LTMF1003 |
R, METAL 100K |
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