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TX-2100
Ref. No. 3836
102004
SERVICE MANUAL
STEREO RECEIVER POWER SLEEP
INPUT SELECTOR
TAPE-1 TUNER PHONO CD
MODEL TX-2100 TAPE-2
DECK-A DECK-B
TUNER
GROUP PRESET MUTING
CD
VOLUME
DISC
REMOTE CONTROLLER RC-330S
RC-330S
Black model
BMDD 120 V AC, 60 Hz
SAFETY-RELATED COMPONENT
WARNING!!
COMPONENTS IDENTIFIED BY MARK ON THE
SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
REPLACE THESE COMPONENTS WITH ONKYO
PARTS WHOSE PART NUMBERS APPEAR AS SHOWN
IN THIS MANUAL.
MAKE LEAKAGE-CURRENT OR RESISTANCE
MEASUREMENTS TO DETERMINE THAT EXPOSED
PARTS ARE ACCEPTABLY INSULATED FROM THE
SUPPLY CIRCUIT BEFORE RETURNING THE
APPLIANCE TO THE CUSTOMER.
TX-2100
SPECIFICATIONS
Amplifier Section General
Power Output Front L/R Power Supply AC 120 V, 60 Hz
50 W + 50 W Power Comsumption 180 W
(8ohm , 20 Hz-20 kHz, FTC)
Stand-by Power Comsumption
Dynamic Power 105 W + 105 W (4 ohm) 1.35 W
70 W + 70 W (8 ohm)
Dimensions(W x H x D)
THD (Total Harmonic Distortion) 17-1/8" x 5-7/8" x 12-11/16" inches
0.08 % (Power Rated) 435 x 150 x 322 mm
Damping Factor 60 (Front, 1 kHz, 8 ohm ) Weight 16.3 lbs
Input Sensitivity and Impedance 7.4 kg
150 mV/50 kohm (LINE) Analog Inputs PHONO, CD, TAPE-1, TAPE-2/
2.5 mV/50 kohm (PHONO MM) MONITOR
Output Level and Impeadance Analog Outputs TAPE-1, TAPE-2/MONI
150 mV/2.2 kohm (REC OUT)
Speaker Outputs 4(SP-A, SP-B)
Phono Overload 120 mV (MM 1 kHz 0.5 %)
Phones 1
Frequency Response 10 Hz-100 kHz/+1 dB -3 dB
(TONE FLAT, CD, TAPE-1,
TAPE-2/MONITOR)
Specifications and features are subject to change with-
Tone Control ±10 dB, 50 Hz (BASS) out notice.
±10 dB, 20 kHz (TREBLE)
SN Ratio 100 dB (LINE ,IHF-A)
80 dB (PHONO, IHF-A)
Speaker Impedance 4 ohm
Tuner Section
FM
Tuning Frequency Range
87.5 MHz-108.0 MHz
Usable Sensitivity Stereo 17.2 dBf 2.0 µV(75 ohm IHF)
Mono 11.2 dBf 1.0 µV(75 ohm IHF)
S/N Ratio Stereo 70 dB (IHF-A)
Mono 76 dB (IHF-A)
THD Stereo 0.25 % (1kHz)
Mono 0.15 % (1kHz)
Frequency Response 30 Hz-15 kHz/±1.5 dB
Stereo Separation 45 dB ( 1kHz )
AM
Tuning Frequency Range
530 kHz-1710 kHz
Usable Sensitivity 30 µV
S/N Ratio 40 dB
THD 0.70%
TX-2100
SERVICE PROCEDURES
1. Replacing the fuse
This symbol located near the fuses indicates that the
fuse used is fast operating type. For continued protection against
fire hazard, replace with same type fuse. For fuse rating refer to
the marking adjacent to the symbol.
Ce symbole indique que le fusible utlise est a rapide.
Pour une protection permanente, n'untiliser que fusibles de
meme type. Ce darnier est la qu le present symbol est
appse.
CIRCUIT NO. PART NO. DESCRIPTION
F901 252163 4A-UL/T-237,Fuse
2. To initialize the unit
This device employs a microprocessor to perform various
functions and operations. If interference generated by an external
power supply, radio wave, or other electrical source results in
accident which causes the specified operations and functions to
operate abnormally.
To perform a result, please follow the procedure below.
1.Press and hold down the TAPE 1 button, then press the
DIRECT TUNING button.
2.After "CLEAR" is displayed, the preset memory stored in the memory,
are initialized and will return to the factory setting.
3. Safety-check out
(Only U.S.A. model)
After correcting the original service problem, perform the
following safety check before releasing the set to the customer.
Connect the insulating-resistance tester between the plug of power
supply cord and screw on the back panel.
Specifications: 3.3Mohm 10% at 500V.
4. Memory Preservation
This unit does not require memory preserv ation batteries. A
built-in memory power back-up system preserv es the contents
of the memory during po wer f ailures and even when the unit is
unplugged. The unit must be plugged in order to char ge the
back-up system.
The memory preserv ation period after the unit has been
unplugged v aries depending on climate and placement of the
unit. On the average, memory contents are protected over a
period of a fe w weeks after the last time the unit has been
unplugged. This period is shorter when the unit is exposed to a
highly humid climate.
TX-2100
A B C D E
EXPLODED VIEW
U8 A202
P901
A303 U2
A301 A302 A300 A202 A204
1 P102
A030
Q522 Q524 A016
A301 Q523 U1
A024 Q521 A026
A024
A021
U11
A203
A013 A201
D911
P711
2 U9 A023
A024 A024 E801 A202
F901
A041 A024
U5
A020 A002 A004 A002
A040
A001
U7 U3 A006
A007
A024
E801 A015 U4 A210
U6
3 T901 A002
A013
A005
A013 A211
A013 A352
A011 A013 A011
A205
A010 A016 A306
A206
A207 A018 A013
A035 A205
A206
TX-2100
4 A207
A011
TX-2100
A B C D E
BLOCK DIAGRAM VOLUME
R409,R415
BASS,TREBLE
HEADPHONE
Q491
R393 MUTE
BALANCE SW
VOLUME L-CH RL592
1 Q302 POWER + L
SPEAKER B
AMP.
SELECTOR -
+B
SWITCH +
RIGHT Q525 Q592 R
R410,R416
BASS,TREBLE
CURRENT
DET.
SPEAKER B
RELAY SW
-
SPEAKERS
R-CH +
TUNER L
SPEAKER A
POWER
AMP. -
PACK Q492
MUTE
+B
+
SW
Q591 R
Q526 Q581,582
DC
SPEAKER B -
CURRENT RELAY SW
DET. DET.
Q493 Q583
GATE
2 PHONO
Q301 CIRCUIT
GATE
CIRCUIT
EQ
AMP.
CD
Q302
SELECTOR
SWITCH
REC
TAPE 1
PB
REC M
TAPE 2
PB STB
DATA Q481
CL VOLUME
MOTOR DRIVER
STANDBY/RCV
MUTE PROTECT
Q703
3 RESET SP B
SP A
Q951
45 POWER POWER
U701
Q701 MICROPROCESSOR REMOTE RELAY SW
47 REMIN SENSOR
RPM7138-H4
SYS OUT 41
K0-K4
SYS IN 46
F901
OPERATION 120V
KEIES 60Hz
THERMAL FUSE
RL901
Q707 P902
BUFFER Q921
RI Q702
IN/OUT FL TUBE Q923
Q922
Q924
TX-2100
TO FL TUBE
4 CONST.
VOLTAGE
TX-2100
A B C D
SCHEMATIC DIAGRAM 1
DISPLAY SECTION
1
Q702 HNA-12MM49 OR 12-BT-102GK
14 10G
15 11G
16 12G
49 P10
50 P11
51 P12
52 P13
53 P14
54 P15
55 P16
3 NP
4 NP
17 NP
18 NP
19 NP
20 NP
21 NP
22 NP
23 NP
24 NP
25 NP
26 NP
27 NP
28 NP
29 NP
30 NP
31 NP
32 NP
33 NP
34 NP
35 NP
36 NP
37 NP
38 NP
39 NP
56 NP
57 NP
5 1G
6 2G
7 3G
8 4G
9 5G
10 6G
11 7G
12 8G
13 9G
40 P1
41 P2
42 P3
43 P4
44 P5
45 P6
46 P7
47 P8
48 P9
1 F1
2 F1
58 F2
59 F2
Q706 R707 100K
2SC1740S R706
R
R
R
R
R
R
R
R
R
R
R
R
10K*12
Q705 R706
2SC1740S 100K
C724
2 103Z
STAND-BY
D709 SEL4110R
1K
R779 10K
R756
R781 1K
R782 1K
1K
R712
R778 270
D704
P11 64
P12 63
P13 62
P14 61
P15 60
P16 59
PROTECT 58
RFIN 57
56
55
SD 54
ST 53
VDD 52
S.TONE 51
STBY 50
49
48
REMIN 47
SYSIN 46
POFF 45
RDSSCK 44
RDSDATA 43
42
41
R777 2.2K
65 P10 POWER 40
R758 1K
66 P9 SPARL 39
R759 1K R715
67 P8