Rotel RA-980BX User manual

STEREO INTEGRATED AMPLIFIER
RA-980BX
TECHNICAL
MANUAL
TABLE OF CONTENTS
Chassis Layout „..1
Specifications 2
Adjustment 2
PC Board Ass’y Parts List 3
Wiring Diagram 5
Printed Circuit Boards 6
Schematic Diagram 7
THE ROTEL CD., L_TD.
1-36-8, OHOKAYAMA, MEGURO-KU, TOKYO 152, JAPAN
ROTEL El—ECTFRONICS CO., LTTD.
3F-2, N0.35, FU HSING NORTH ROAD, TAIPEI, TAIWAN, REPUBLIC OF CHINA

REMOTE
SPEAKERS
DIRECT
SPEAKERS
Chassis Layout

Specifications RA-980BX
Continuous Power Output.. .100 watts* per channel, min.
RMS both channels driven into
8ohms from 20 to 20,000 kHz
with no more than 0.03% total
harmonic distortion.
DIN Output 190 watts per channel (1 kHz,
4ohms, 1% THD)
Peak Current 80 A(0.1 ohms, 10 usee, 1
Pulse)
Total Harmonic Distortion...No more than 0.03% (con-
tinuous rated power output) No
more than 0.03% (continuous
1/2 rated power output) No
more than 0.05% (1 watt per
channel power output, 8ohms)
Intermodulation DistOrtion...No more than 0.05% (con-
tionuous rated power output)
No more than 0.05% (con-
tinuous 1/2 rated power output)
No more than 0.05% (1 watt per
channel power ouptut, 8ohms)
Output: SPEAKERS 4ohms minimun
HEADPHONE 8-2,000 ohms
Damping Factor:. 1000 (20 to 20,000 Hz, 8ohms)
Input Sensitivity/ Impedance:
PHONO: MC 250 uV/ 100 ohms
MM 2.5 mV/ 47 kohms
CD, TUNER 150 mV/ 33 kohms
AUX, TAPE 1,2150 mV/ 33 kohms
Overload Level (THD 0.5%, 1kHz):
PHONO: MC 17 mV
MM 160 mV
CD, TUNER 5V
AUX, TAPE 1,2 5V
Frequency Response:
PHONO 20 to 20,000 Hz, +/- 0.2 dB
(RIAA STD)
CD, TUNER 4to 100 kHz, +1.0 dB, -3.0 dB
AUX, TAPE 1,2 4to 100 kHz, +1.0 dB, -3.0 dB
Tone Control:
BASS +/- 6.0 dB (100 Hz)
TREBLE +/- 6.0 dB (10 kHz)
Signal to Noise Ratio (IHF, Anetwork):
PHONO: MC 70 dB
MM 75 dB
CD, TUNER 97 dB
AUX, TAPE 1,2 97 dB
MISCELLANEOUS
Power Requirement 120 V/ 60 Hz, 220 V/ 50 Hz,
240 V/ 50 Hz (depending on
destinations)
Power Consumption 400 watts
Dimension (overall) 440 (W) x121 (H) x347 (D) mm
17-3/8" x4-1 3/1 6" x13-1 1/1 6"
Weight (net) 10.1 kg /22.2 lbs
•Specifications and design subject to possible modifica-
tion without notice.
•‘Measured pursuant to the Federal Trade Commis-
sion’s Trade Regulation Rule or, Power Claims for
Amplifiers (applicable to the U.S.A. only).
Power Amplifier Bias Adjustment
Instruments: DC milli-voltmeter
Notes: Prior to Bias Adjustment, run about 5minutes with rated output
(8 ohm) and warm up Power Transistor and Heat Sink.
Set Volume control to minimum.
Step Coupling Adjust Adjust for
Plus Lead Minus Lead
1TP3 TP1 VR601 DC milli-voltmeter
reads 10 mV
2TP4 TP2 VR602

Parts List
NOTE :THE COMPONENTS INDENTIFIED BY AMARK ARE FOR SAFFTY .REPLACE ONLY WITH ORIGINAL PARTS .DO NOT SUBSTITUTE
SYMBOL PARTS NO. DESCRIPTION
X-1173A01T P.C.B. ASSEMBLY
R501, 502
R503, 504
R505, 506
R507, 508
R509, 510
RM81500616
RM81003610
RM81002616
RM81821615
RM81000619
R, METAL MK2150RFECZ.
R, METAL MK2100KFECZ
.
R, METAL MK2010KFECZ.
R, METAL MK21K82FECZ.
R, METAL MK2100RFECZ.
R511 ,512
R513, 514
R515, 516
R517, 518
R519-522
RM81003610
RM82211 614
RM81821615
RM82212618
RM81501610
R, METAL MK2100KFECZ
.
R, METAL MK22K21FECZ.
R, METAL MK21K82FECZ.
R, METAL MK222K1FECZ.
R, METAL MK201K5FECZ
.
R523, 524
R525-528
R529, 530
R531, 532
R533, 534
RM81500616
RM81003610
RM81211618
RM82211614
RM81000619
R, METAL MK2150RFECZ.
R, METAL MK2100KFECZ.
R, METAL MK21K21FECZ.
R, METAL MK22K21FECZ.
R, METAL MK2100RFECZ.
R535, 536
R537, 538
C501 ,502
C503, 504
C505, 506
RM88251610
RM82211614
CE51006477
CS31011310
CP61008321
R, METAL MK28K25FECZ.
R, METAL MK22K21FECZ.
CAP, ELEC. 50BGF10M
CAP, POLYSTYRENE 160V 100P
CAP, M. P100V104K
C507, 508
C509, 510
C511 ,512
C513, 514
C515, 516
CE72205645
CP61008321
CE72205645
CE51006477
CM01008423
CAP, ELEC. 220uF 25V HFS
CAP,M.P100V 104K
CAP, ELEC. 220uF 25V HFS
CAP, ELEC. 50BGF10M
CAP, MYLAR 104 J50V
C517, 518
C519, 520
C521, 522
C523, 524
C525, 526
CM01208424
CS41510414
CE51006477
CS34712311
CE51006477
CAP, MYLAR \24 J50V
CAP,STYROL 1500P 50V
CAP, ELEC. 50BGF10M
CAP, POLYSTYRENE 160V47P
CAP, ELEC. 50BGF10M
C527, 528
C529
IC501 ,502
S501
VR502, 503
CM01008423
CC64709439
IC00002454
SH30000500
RV10001541
CAP, MYLAR 104 J50V
CAP, LAYER CERAMIC 473K 50V
IC AD712JN
FUNCTION SW 4TR-2780
R, VARIABLE 4TR-2774 20KBx2
HJ1
S301 ,302
S30
R601 ,602
R603, 604
JH00000135
SH30000511
SH30000535
RM83322614
RM81001612
HEAD PHONE JACK C-3399#l
FUNCTION SW 4TR-2781
FUNCTION SW C-4174A11
R, METAL MK233K2FECZ.
R, METAL MK2001KFECZ.
R607, 608
R609, 610
R611-614
R615-618
R619, 620
RM81501610
RM81501610
RM81501610
RM82210610
RM85620616
R, METAL MK201K5FECZ
.
R, METAL MK201K5FECZ
.
R, METAL MK201K5FECZ.
R, METAL MK2221RFECZ
.
R, METAL MK2562RFECZ
.
R623, 624
R625, 626
R627, 628
R633, 634
R635, 636
RM84752616
RM81000619
RM81000619
RM86811612
RM81211618
R, METAL MK247K5FECZ.
R, METAL MK2100RFECZ.
R, METAL MK2100RFECZ
.
R, METAL MK26K81FECZ.
R, METAL MK21K21FECZ.
R639 ,640
R641 ,642
R643, 644
R657-660
R661-668
RM81001612
RM84759611
RM84752616
RS20228230
RS20228230
R, METAL MK2001KFECZ.
R, METAL MK247R5FECZ.
R, METAL MK247K5FECZ
.
R, SQUARE TYPE MPC70-0.22F
R, SQUARE TYPE MPC70-0.22F
R669, 670
T671, 672
R673, 674
R679
R680
RM91009322
RD51000820
RD51200820
RD56800825
RM92701924
R, METAL OXIDE 3W 10 J
R, CARBON 100 1/4W J
R, CARBON 120 1/4W J
R, CARBON 680 1/4W J
R, METAL OXIDE FILM 1/2W 2.7K
R681, 682
R683
R686, 687
R697
R698
RD58201829
RD53900821
RM94700121
RM88251610
RM81500616
R, CARBON 8.2K 1/4W J
R, CARBON 390 1/4W J
R, METAL 1W 470 J
R, METAL MK28K25FECZ.
R, METAL MK2150RFECZ.
0601,602
C603, 604
C605, 606
CE54707478
CP76811359
CS32211306
CAP, ELEC. 50BGF4R7M
CAP,P.P100V 680P
CAP/POLYSTYRENE 160V 220P
SYMBOL PARTS NO. DESCRIPTION
C607, 608
C609 ,610 CE51005679
CE51006477 CAP, ELEC. 25BGF100M
CAP, ELEC. 50BGF10M
C611, 612
C613-616
C617, 618
C624
Q601-604
CS33311310
CS32211306
CP61008321
CE02206259
TR30000212
CAP, POLYSTYRENE 160V 330P
CAP, PLOYSTYRENE 160V 220P
CAP, M. P100V 104K
CAP, ELEC. 22uF 25V
TRANSISTOR 2SC2362 (F, G
)
Q605-610
Q611 ,612
Q613, 614
Q615,616
Q617, 618
TR10000023
TR30000212
TR10000217
TR30000571
TR40000124
TRANSISTOR 2SA1016 (F,G)
TRANSISTOR 2SC2362 (F,G)
TRANSISTOR 2SA1209-ST
TRANSISTOR 2SC2911-ST
TRANSISTOR 2SD600K)E)
Q619 ,620
Q621 ,622
Q623, 624
Q625, 626
Q627, 628
TR30000558
TR10000308
TR30000560
TR10000291
TR40000045
TRANSISTOR 2SC3478 (L,K,U)
TRANSISTOR 2SA1376 (L,K,U)
TRANSISTOR 2SC4381 (0,Y)
TRANSISTOR 2SA1667 (0,Y)
TRANSISTOR 2SD1047 (D,E)A
Q629 ,630
Q631, 632
Q633, 634
Q635, 636
Q637, 638
TR20000040
TR40000045
TR20000040
TR40000045
TR20000040
TRANSISTOR 2SB817 (D,E) A
TRANSISTOR 2SD1047 (D,E)A
TRANSISTOR 2SB817 (D,E) A
TRANSISTOR 2SD1047 (D,E)A
TRANSISTOR 2SB817 (D,E) A
Q639 ,640
Q643, 644
D601-608
D609-612
D613-615
TR10000023
TR30000327
DD80000021
DD80000010
DD80000021
TRANSISTOR 2SA1016 (F,G)
TRANSISTOR 2SC536G
DIODE 1N4148
DIODE 1N4003
DIODE 1N4148
D617
D619
D695
RY601
TH601, 602
DD80000021
DD20000089
DD80000021
LY00000277
DD60000260
DIODE IN4148
DIODE RD24E
DIODE IN4148
RELAY RY-24W-KJ A
THERMISTOR TD5C-350CD
S601
D001, 002
R901, 902
R903-906
R911
SH11000434
DD40000095
RM83921613
RF13300838
RD52203828
1KEY PUSH SW 4TR-2899
LED LN224R
R, METAL MK23K92FECZ.
R, FUSIBLE TYPE ERQ14AJ331P
R, CARBON 220K 1/4W J
R912
R913
C901-908
C909-912
C913, 914
RD52201820
RD65600828
CC01009256
CE61003631
CE71004255
R, CARBON 2.2K 1/4W J
R, CARBON 560 1/4W J
CAP, CERAMIC O.OluF 250V A
CAP, ELEC. IOOOOuF 63V A
CAP, ELEC. IOOOuF 25V
C915-918
C919
Q901, 902
Q903, 904
D901, 902
CE51005679
CE02205255
TR40000124
TR10000047
DD10000147
CAP, ELEC. 25BGF100M
CAP, ELEC. 220uF 25V
TRANSISTOR 2SD600K (E)
TRANSISTOR 2SB631K (E, F
)
DIODE KBPC802 A
D903, 904
D905
D906-910
F901, 902
DD20000041
DD80000010
DD80000021
FU25000053
FU23000219
FU21000174
DIODE RD18E
DIODE 1N4003
DIODE 1N4148
FUSE 125V 8A UL (U,C,J,A) A
FUSE 250V T6.3A S(E8) A
FUSE 250V T8A A
X-1173A02T P.C.B. ASSEMBLY
R301-304 RM81001612 R, METAL MK2001KFECZ
.
X-1173A03T P.C.B. ASSEMBLY
VR501 RV10001619 R, VARIABLE C-4170A19 50KAx2
X-1173A04T P.C.B. ASSEMBLY
R401, 402
R403, 404
R405, 406
R407 ,408
R409-412
RM84752616
RM81000619
RM84752616
RM82212618
RM85621610
R, METAL MK247R5FECZ
.
R, METAL MK2100RFECZ.
R, METAL MK247K5FECZ
.
R, METAL MK222K1FECZ
.
R, METAL MK25K62FECZ.

Parts List
SYMBOL PARTS NO. DESCRIPTION
R413.414
R415, 416
R417 ,418
R419 ,420
R425.426
RM82740611
RM85620616
RM82741615
RM87502611
RM84751612
R, METAL MK2274RFECZ.
R, METAL MK2562RFECZ
.
R, METAL MK22K74FECZ
.
R, METAL MK2075KFECZ
.
R, METAL MK24K75FECZ.
R427, 428
R429, 430
R431 ,432
R433.434
R435.436
RM84752616
RM84753610
RM81003610
RM81000619
RM81009611
R, METAL MK247K5FECZ
.
R, METAL MK2475KFECZ
.
R, METAL MK2100KFECZ.
R, METAL MK2100RFECZ
.
R, METAL MK2010RFECZ
.
R437, 438
C401.402
C403.404
C405.406
C407, 408
RM84750619
CP71011353
CP61008321
CE51005679
CS32212300
R, METAL MK2475RFECZ.
CAP, P. P100V 100P
CAP, M. P100V 104K
CAP, ELEC. 25BGF100M
CAP, POLYSTYRENE 160V 22P
C409, 410
C411, 412
C413.414
C415.416
C417.418
CP71010300
CE51005679
CP61008321
CP61008321
CE51005679
CAP,P.P100V 1000P
CAP, ELEC. 25BGF100M
CAP ,M.P100V 104K
CAP,M.P 100V 104K
CAP, ELEC. 25BGF100M
C419.420
C421.422
C423, 424
C425.426
C429.430
CE51006477
CP61008321
CE51005679
CS36810300
CE51006477
CAP, ELEC. 50BGF10M
CAP.M.P 100V 104K
CAP, ELEC. 25BGF100M
CAP, POLYSTYRENE 160V 6800P
CAP, ELEC. 50BGF10M
C431 ,432
C435
IC401 ,402
IC403, 404
Q401-404
CS33311310
CC05009457
IC00002430
IC00001735
TR40000100
CAP, POLYSTYRENE 160V 330P
CAP, CERAMIC 0.047uF 50V
IC TL071CP
IC NE5534AN
TRANSISTOR 2SD786 (R,S)
Q405, 406
S401
D401-404
TR30000212
SH11000367
DD80000021
TRANSISTOR 2SC2362 (F, G)
1KEY PUSH SW 4TR-2783 4U
DIODE 1N4148
X-1173A05T P.C.B ASSEMBLY
R695.696 RM82212618 R, METAL MK222K1FECZ.
X-1173A06T P.C.B. ASSEMBLY
SA00002193 AC OUTLET SOCKET C-4372A00
(U,C, A, J) A
X-1173A07T P.C.B. ASSEMBLY
C001
S001 CK00000035
SH40000167 SPARK KILLER DE7150F472M A
POWER SW C-4176A02 TV08 A^
OTHERS
AF20000271
AR20000607
AS01000348
KB20002747
PT00000291
FRONT CHASSIS PR2-03A00T
RPINTED REAR CHASSIS TRP-589
SIDE CHASSIS PR3-20A00T
PUSH BUTTON PR4-07A00T
POWER TRANSFORMER
T-1034M01 A
FT00000229
PN00000080
SB00000686
SC00000120
PLASTIC FOOT 4TSH-19A#2
50FX14H
JUMPER PIN 4TR-2185#1 P-18
P.V.C SHIELD PLATE 4TR-2869
AC CORD STOPPER SP-5KN-4 A
SP10006478
SP10006521
CD00000220
CD00000048
RCA JACK SUPPORT PR4-08A00T
P.T SUPPORT PR4-19A00T
AC CORD SPT-2 AWG#16
4TR-670#5-C, U, A, JA
AC POWER CORD 4TR-1037-H A
CD00000115
CD00000085
CD00000292
AC POWER CORD C-3763-T-G A
AC POWER CORD C-2504A-K1 A
AC POWER CORD 4TR-2631#1-D A
SYMBOL PARTS NO. DESCRIPTION
SP30000574 OUTLET COVER PR4-21A00T
AH20000874 HEAT SINKER BOARD PR4-06A00T
AH20000898 HEAT SINKER BOARD C-4401A02
SB00000649 ALUMINUM SHIELD FIBER
C-4430A00T
SP10006508 P.C.B SUPPORT (R) PR2-18A01T
SP10006510 P.C.B SUPPORT (L) PR2-18A02T
AA20000646 FRONT PANEL PR2-01Q00T
TFP-630
BU00001145 POWER RING 4TQF-13 14x14
BU00001212 PUSH BUTTON RING PR4-09100T
BU00001224 KNOB RING PR4-12A00T 46F
KB20002681 POWER BUTTON 4TQF-15 14x14
KB20002759 PUSH BUTTON PR4-13A00T
50x20
0M10001284 ORNAMENTAL SIDE BOARD
4TR-2797#3
OM70000065 PUSH BUTTON CONNECTOR
4TTL-15
SN00000179 BUTTON SPRING 4TR-1988#2 10F
AB00000560 BOTTOM BOARD PR3-05A00T
AU00001225 TOP COVER POLY 3TUV-6#6
KB10001722 KNOB 4TQF-18 13F
KB10001734 KNOB 4TQF-19 24F
KB10001771 KNOB PR4-10A00T
KB10001783 KNOB 43F PR4-10A00T (WF)
FE00000067 FELT 4TR-1083B#1 22F
FE00000092 FELT 4TR-1083B#2 30F
FE00000432 FELT 4TR-1083B#5 58F
SR00000882 UPPER COVER SPACER 4TR-2418
MN10002847 OWNER'S MANUAL RA-980BX
PL00001051 STYROL SIDE MOULDING
2TR-2800 TZ-183
NP00001949 NAME STICKER ROTEL-120V
4TR-2828A#1 TNP-382
NP00001962 NAME STICKER ROTEL-240V
4TR-2828A#3 TNP-384
NP00001974 NAME STICKER R0TEL-120V-C
4TR-2828A#4 TNP-385
NP00001998 NAME STICKER ROTEL-230V
4TR-2828A#5 TNP-389
NP00002012 NAME STICKER ROTEL-IOOV
4TR-2828A#6 TNP-391
NP00001950 NAME STICKER ROTEL-220V
4TR-2828A#2 TNP-383

Wiring Diagram
i

(D600K 2SD600K

Printed Circuit Boards
X1173A02T
£
>*
a-
MOI JPI .
X-11 73A03T

R682
TH602
0904 ATTENTION- afin o’
ASSURER UNE PROTECTION
PERMANENTE CONTRE LESI
RISQUES O'INCENDIE,
CAUTION:for continued
PROTECTION AGAINST FIRE
HAZARD. REPLACE ONLY WITH
SAME TYPE(F901.F902.F60I-
F602JT8A 2S0V FUSE- KISWUtS UINLLNUIL,
REMPLACER UN1QUEMENT
PAR UN FUSIBLE DE MEME
TYPEIF901.F902 .F601F602)

Schematic Diagram
SCI—IEMATIC DIAGRAM MOIDEII RA—980BX cnote'Parts Ah

XCNOTE'PARTS AND CIRCUIT SUBJECT TO CHANGES FDR IMPROVEMENTS WITHOUT PRIOR NOTICE. )

Schematic Diagram
INSTRUCTION FDR SERVICING PERSDNNEU
1>. USE ONLY REPLACEMENT PARTS THAT HAVE THE CRITICAL
CHARACTERISTICS RECOMMENDED BY MANUFACTURER.
3). MAKE LEAKAGE-CURRENT OR RESISTANCE MEASURMENTS
TO DETERMINE THAT EXPOSED PARTS ARE ACCEPTABLY
INSULATED FROM THE AC SUPPLY CIRCUIT BEFORE RETURNING
THE UNIT TO THE CUSTOMER. •NE5532AN
•TL071CP