Wiring Diagram
Quality Uncompromised
®
Technical
Manual
THREE-CHANNEL POWER AMPLIFIER
RB-993
Table of Contents |
|
Specification..................................... |
1 |
Wiring Diagram ................................ |
2 |
Parts List .......................................... |
3,4 |
Adjustment....................................... |
4 |
PCB Assembly ................................. |
5,6 |
Schematic Diagram.......................... |
7,8 |
Specification
Continuous Power Output |
(20-20 kHz, < 0.03%, 8 ohms) |
200 watts/ch. |
||
Total Harmonic Distortion |
(20 Hz-20 kHz, 8 ohms) |
< 0.03% |
||
Intermodulation Distortion |
(60 Hz: 7 kHz, 4:1) |
< 0.03% |
||
Frequency Response |
(+0.5dB,-3dB) |
15-100K Hz, |
||
Damping Factor |
|
(20-20,000 Hz, 8 ohms) |
1000 |
|
Speaker Impedance |
(Normal mode) |
4 ohms minimum |
||
Signal to Noise Ratio |
(IHF A network) |
116 dB |
||
Input Impedance/Sensitivity |
|
32 k Ohms/1.5 volt |
||
Power Requirements |
|
115 |
Volts, 60 Hz or |
|
|
|
|
230 |
Volts, 50 Hz |
Power Consumption |
|
600 |
Watts |
|
Dimensions |
(W, H, D) |
|
440 x 121 x 385 mm |
|
|
|
|
173/8 x 43/4 x 153/16 in |
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Weight (net) |
|
|
18.3 kg, 40.3 lb |
|
Serial. NO.
BUNZAN-SHINSEN-BLD. 4F 10-10 SHINSEN-CHO, SHIBUYA-KU,
Begining
TOKYO 150-0045, JAPAN
Y-313A-98095C/S-S
2
Parts List
SYMBOL |
|
PARTS NO. |
DESCRIPTION |
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X-1253-01 PCB ASSEMBLY |
|
|
C101 |
041 |
50BGF4R7M |
CAP,ELEC.50V4.7UF |
|
C102 |
044 |
TFKP2-100V681H |
CAP,FILM 100V680PF |
|
C103 |
044 |
LFSC160V471H |
CAP,STYROL 160V470PF |
|
C104 |
044 |
LFSC160V221H |
CAP,STYROL 160V220PF |
|
C105 |
041 |
25BGF100M |
CAP,ELEC.25V100UF |
|
C107 |
041 |
50BGF10M |
CAP,ELEC.50V10UF |
|
C108 |
044 |
LFSC160V331H |
CAP,STYROL 160V330PF |
|
C109 |
044 |
LS50V100PJ |
CAP,STYROL 50V100OF |
|
C110,111 |
041 |
25BGF100M |
CAP,ELEC.25V100UF |
|
C901,902 |
041 |
25BGF470M |
CAP,ELEC.25V470UF |
|
D101-104 |
034 |
LT1N4148-86 |
DIODE |
|
D901,902 |
034 |
TRD16JST1 |
ZENER DIODE |
|
IC101 |
031 |
LNE5534AN |
IC |
|
Q101-103 |
033 |
LT2SC2362KAA-FG TRANSISTOR |
|
|
Q104-106 |
033 |
LT2SA1016KAA-FG TRANSISTOR |
|
|
Q107 |
033 |
2SA1142-EPQ |
TRANSISTOR |
|
Q108 |
033 |
2SC2682-EPQ |
TRANSISTOR |
|
Q901 |
033 |
L2SD600K-EF |
TRANSISTOR |
|
Q902 |
033 |
L2SB631K-EF |
TRANSISTOR |
|
R101 |
054 |
LTMK2001KFECZ |
R,METAL 1% |
1K |
R102 |
054 |
LTMK2033KFECZ |
R,METAL 1% |
33K |
R103 |
054 |
LTMK2470RFECZ |
R,METAL 1% |
470R |
R104-107 |
054 |
LTMK201K5FECZ |
R,METAL 1% |
1.5K |
R108 |
054 |
LTMK2560RFECZ |
R,METAL 1% |
560R |
R109 |
054 |
LTMK2010RFECZ |
R,METAL 1% |
10R |
R110,111 |
054 |
LTMK2220RFECZ |
R,METAL 1% |
220R |
R112 |
054 |
LTMK2047KFECZ |
R,METAL 1% |
47K |
R113,114 |
054 |
LTMK2100RFECZ |
R,METAL 1% |
100R |
R115 |
054 |
LTMK206K8FECZ |
R,METAL 1% |
6.8K |
R116 |
054 |
LTMK203K9FECZ |
R,METAL 1% |
3.9K |
R118-121 |
054 |
LTMK2010KFECZ |
R,METAL 1% |
10K |
R122 |
054 |
LTMK2033KFECZ |
R,METAL 1% |
33K |
R133 |
054 |
LTMK2022KFECZ |
R,METAL 1% |
22K |
R134 |
054 |
LTMF3300 |
R,METAL 330R |
|
R901,902 |
054 |
1WS2.2KJF |
R,METAL 1W 2.2K |
|
R903,904 |
054 |
1WS5.6KJF |
R,METAL 1W 5.6K |
|
VR101 |
051 |
LVM6CKPV1S2.2K |
SEMI-FIXED RESISTOR |
|
|
017 |
L4TR-2792#3 |
SUB HEAT SINKER |
|
|
019 |
TO-126 |
INSULATION SHEET |
|
|
066 |
L4TR-2487#4 |
1P PINJACK |
|
|
066 |
C-4575A01 |
3P CANNON CONNECTOR |
|
|
|
X-1253-02 PCB ASSEMBLY |
|
|
C906-909 |
041 |
ALS20S1024XX |
CAP,ELEC.80V15000UF |
|
|
069 |
C-4446A00 |
SCREW TERMINAL |
|
|
|
X-1253-03 PCB ASSEMBLY |
|
|
C119 |
044 |
MKT18-100V104K |
CAP,FILM 100V0.1UF |
|
R166 |
054 |
2WS10JF |
R,METAL 2W 10R |
|
|
067 |
4TR-3222 |
SPEAKER TERMINAL |
|
|
|
|
|
|
SYMBOL |
|
PARTS NO. |
DESCRIPTION |
|
|
|
|
|
|
X-1254-01 PCB ASSEMBLY |
|
C113,114 |
044 |
LFSC160V561H |
CAP,STYROL 160V560PF |
C117,118 |
041 |
UVX2A102MRAY |
CAP,ELEC.100V1000UF |
C120 |
041 |
UTSS1E100-FB |
CAP,ELEC.25V10UF |
C121 |
041 |
UTSS1E221-FB |
CAP,ELEC.25V220UF |
C122 |
041 |
UTSS1H4R7-FB |
CAP,ELEC.50V4.7UF |
C123 |
041 |
UTSS1E470-FB |
CAP,ELEC.25V47UF |
D105,106 |
034 |
LT1N4003-TB |
DIODE |
D107,108 |
034 |
LT1N4148-86 |
DIODE |
F101,102 |
036 |
5ST6.3 |
MINIFUSE 250V6.3A |
IC102 |
031 |
MPC1237HA |
IC |
Q109 |
033 |
LT2SC2910AE-RST |
TRANSISTOR |
Q110 |
033 |
LT2SA1208AE-RST |
TRANSISTOR |
Q119 |
033 |
LT2SC2362KAA-FG |
TRANSISTOR |
Q120,121 |
033 |
LT2SA1016KAA-FG |
TRANSISTOR |
Q122 |
033 |
LT2SC2362KAA-FG |
TRANSISTOR |
R123,124 |
054 |
LTMK2220RFECZ |
R,METAL 1% 220R |
R125 |
054 |
LTMK2001KFECZ |
R,METAL 1% 1K |
R126 |
054 |
LTMK2047RFECZ |
R,METAL 1% 47R |
R127-132 |
054 |
NIR2-0.22JF |
R,METAL 2W 0.22R |
R147 |
053 |
CR14-391J-A |
R,CARBON 390R |
R148 |
053 |
CR14-223J-A |
R,CARBON 22K |
R149 |
053 |
CR14-122J-A |
R,CARBON 1.2K |
R150 |
053 |
CR14-153J-A |
R,CARBON 15K |
R151 |
053 |
CR14-561J-A |
R,CARBON 560R |
R152 |
053 |
CR14-333J-A |
R,CARBON 33K |
R153 |
053 |
CR14-472J-A |
R,CARBON 4.7K |
R154 |
053 |
CR14-473J-A |
R,CARBON 47K |
R155,156 |
053 |
CR14-104J-A |
R,CARBON 100K |
R157 |
053 |
CR14-124J-A |
R,CARBON 120K |
R158 |
053 |
CR14-683J-A |
R,CARBON 68K |
R159 |
053 |
CR14-153J-A |
R,CARBON 15K |
R160 |
053 |
CR14-473J-A |
R,CARBON 47K |
R161 |
054 |
1WS1.2KJF |
R,METAL 1W 1.2K |
R162 |
053 |
CR14-824J-A |
R,CARBON 820K |
R163 |
053 |
CR14-103J-A |
R,CARBON 10K |
R164,165 |
054 |
2WS6.8KJF |
R,METAL 2W 6.8K |
R167 |
053 |
CR14-182J-A |
R,CARBON 1.8K |
RY101 |
063 |
DH24D2-OT(M) |
RELAY |
TH101 |
034 |
TTC-503 |
THERMISTOR |
|
069 |
C-3417A |
FUSECLIP |
|
069 |
C-4446A00 |
SCREW TERMINAL |
|
|
X-1254-04 PCB ASSEMBLY |
|
C903 |
041 |
UTES2A220-FB |
CAP,ELEC.100V22UF |
C910 |
041 |
UTES2A221-FA |
CAP,ELEC.100V220UF |
D903,904 |
034 |
LT1N4003-TB |
DIODE |
Q903 |
033 |
L2SD600K-EF |
TRANSISTOR |
R905 |
054 |
2WS180JF |
R,METAL 2W 180R |
R906 |
053 |
CR14-562J-A |
R,CARBON 5.6K |
R907 |
053 |
CR14-822J-A |
R,CARBON 8.2K |
|
|
|
|
Parts List
SYMBOL |
|
PARTS NO. |
DESCRIPTION |
|
|
|
|
R908 |
054 |
1WS15KJF |
R,METAL1W15K |
TH901,902 |
034 |
SCK2R512 |
SURGE CURRENT THERMISTOR |
|
017 |
C-4401A01 |
SUB HEAT SINKER |
|
019 |
TO-126 |
INSULATION SHEET |
|
|
X-1254-05 PCB ASSEMBLY |
|
C904 |
044 |
DE7150F472M |
SPARK KILLER |
S001 |
061 |
C-4176A07 |
POWER SWITCH |
|
|
HEAT SINKER ASSEMBLY |
|
Q111 |
033 |
L2SD1047-DE |
DRIVER TRANSISTOR |
Q112 |
033 |
L2SB817-DE |
DRIVER TRANSISTOR |
Q113-115 |
033 |
2SC5200-OR |
POWER TRANSISTOR |
Q116-118 |
033 |
2SA1943-OR |
POWER TRANSISTOR |
Q123 |
032 |
L2SD1953 |
TRANSISTOR |
|
019 |
TO-126 |
INSULATION SHEET |
|
019 |
TO-3P |
INSULATION SHEET |
201 SAME AS 101 ,
301 SAME AS 102 ,
SYMBOL |
PARTS NO. |
DESCRIPTION |
|
|
|
|
OTHERS |
|
011 |
FP-473 |
FRONT PANEL |
011 |
RV4-02A03 |
H/S FRONT PANEL(L) |
011 |
RV4-02A04 |
H/S FRONT PANEL(R) |
012 |
RV4-09A00 |
PUSH KNOB 14F |
014 |
RV3-07A00 |
UPPER COVER |
015 |
RP-343 |
REAR CHASSIS |
019 |
L4TSH-19#2 |
PLASTIC FOOT |
022 |
T-1057U02 |
POWER TRANSFORMER |
034 |
LBR254 |
POWER DIODE |
063 |
A-0710W-15A |
BRAKER |
072 |
L4TR-670#5 |
AC CORD for STD |
072 |
LC-3763 |
AC CORD for AUSTRALIA |
072 |
C-4572A01 |
AC CORD for UK |
072 |
C-4573A01 |
AC CORD for CEE |
081 |
RV4-17A00 |
INSIDE CARTON |
081 |
Z-200 |
STYROL SIDE MOULDING |
|
|
|
Adjustment
Instruments |
: DC milli–voltmeter |
|
|
|
||
Notes |
: Prior to Bias Adjustment, run about 5minutes with rated output(8ohms) and |
|||||
|
|
warm up Power Transistor and Heat Sink. Set input off. |
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Step |
|
Coupling |
Location |
Adjust |
Location |
Adjust for |
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1 |
|
X-1253-01 |
PCB TP1 |
X-1254-01 |
PCB VR101 |
DC milli–voltmeter reads 7mV |
|
|
|
|
|
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|
2 |
|
X-1253-02 |
PCB TP2 |
X-1254-01 |
PCB VR201 |
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3 |
|
X-1253-03 |
PCB TP3 |
X-1254-01 |
PCB VR301 |
|
|
|
|
|
|
|
|
2SA1142 |
2SB631K |
NE5534AN |
2SB817 |
MPC1237HA |
2SC2682 |
2SD600K |
|
2SD1047 |
|
2SA1208 |
2SD1953 |
|
2SA1943 |
|
2SC2910 |
|
|
2SC5200 |
|
3 |
4 |
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