Onkyo TX-3000 User manual

SERIAL NO. 3074
ONKYO.
SERVICE
MANUAL
SERVO LOCKED
FM/AM STEREO RECEIVER
MODEL TX-3000
1990 an OX Ct
D model G/W model
POAQONONO
mm
ONE

TX-3000
SPECIFICATIONS
AMPLIFIER SECTION
Output Power: 45 watts per channel, min. RMS, Signal-to-Noise Ratio: Mono: 70 dB
at 8 ohms both channels driven, Stereo: 65 dB
from 20 Hz to 20,000 Hz, with Alternate Channel Att: 60dB
no more than 0.04% total AM Suppression Ratio: 52 dB
harmonic distortion. Harmonic Distortion: Mono: 0.15%
Total Harmonic
Stereo: 0.3%
Distortion: 0.04% at rated power Frequency Response: 30 Hz — 15,000 Hz (41.5 dB)
0.04% at 1 watt output Stereo Separation: 40 dB at 1 kHz
IM Distortion: 0.1% at rated power . 30 dB at 100 Hz — 10,000 Hz
0.04% at 1 watt output Muting Level: 14.7 dBf, 3 uV
Damping Factor: 40 at 8 ohms Stereo Threshold: 14.7 dBf, 3 pV
Frequency Response: 20 Hz — 30,000 Hz (+1 dB) Servo Lock Level: 14.7 dBf, 3 pV
RIAA Deviation:
Sensitivity & Impedance:
20 Hz — 20,000 Hz (+0.8 dB)
Phono: 2.5 mV, 50 kohms
Tape Play: 150 mV, 50 kohms
AM:
Tuning Range: 325 — 1,620 kHz
Tape Rec: 150 mV, 3.5 kohms Usable Sensitivity : 2) wv
(PH) | Image Rejection Ratio: 45 dB
Phono Overload: 180 mV r.m.s. at | kHz, 0.04% IF Rejection Ratio: 30 dB
THD. Signal-to-Noise Ratio: 40 dB
Signal-to-Noise Ratio: Phono: 85 dB (at 10 mV input Harmonic Distortion: 0.8%
IHF A weighted) GENERAL
_ 65 dB CHF C weighted) power Supply: AC 120 volts, 60 Hz (D model)
Tape: 95 dB (IHF A welgnen AC 220 volts, 50 Hz (G model)
| | 90 dB (IHF C weighted) AC 220/120 volts, 50/60 Hz
Residual Hum & Noise: 0.8 mV at Volume Control: min.
Tone Controls: Bass: +12 dB at 100 Hz (W model)
one
WONMTONS:
ss
;
+12
d
10
ki
Outputs:
Speaker
A
&
B,
Phones,
Tape
—_ Treble: 7 oB at 10 kHz Rec Out 1 & 2, AC Outlet (x 2)(D model)
High Filter: 6 kHz (6 dB/oct) Inputs: Phono, Tape Play | & 2
Loudness (—30 dB): +9 dB at 40 Hz FM and AM An tennas
+5 dB at 20 kHz Antennas: FM: 300 ohms balanced and
75 ohms unbalanced
TUNER SECTION AM: _ built-in ferrite core
FM: antenna and external
Tuning Range: 88 — 108 MHz (D model) terminal
87.5 MHz — 108 MHz Semiconductors: I FET, 20 transistors, 11 ICs,
(G/W model) 38 diodes (D & W model)
Usable Sensitivity: Mono: 11.2 dBf, 2 uv 1 FET, 22 transistors, 11 ICs,
Stereo: 19.2 dBf, 5 uV 38 diodes (G model)
50 dB Quieting Dimensions (W x Hx D): 480 x 130 x 376mm
Sensitivity : Mono: 17.2 dBf, 4 uV 19” x 5-1/8” x 14-13/16”
Stereo: 37.2 dBf, 40 uv Weight: 11.4 kg, 25.1 Ibs
Capture Ratio: 1.5 dB
Image
Rejection
Ratio:
60dB
Specifications
and
features
are
subject
to
change
without
notice.
IF Rejection Ratio: 85 dB
Spurious Rejection Ratio: 85 dB
COMPONENT LOCATION
slowole
©) |) \& |G ©
Wht
Back View

TX-3000
© ®
()
0
' in Top View
COMPONENT LOCATION-PARTS LIST
31 27120200 Back panel (D)
D/W model 27120202 Back panel (W)
RFF. CIRCUIT NO. PARTS NO. DESCRIPTION 330143 FF-1S4. Puseholdes(W)
; (on the chassis)
l 13549581A Aa rec ameter mob 27300288 Switch locked plate(W)
2 13549583 NASW-783, Switch p.c.b. 25065109 — NSS-2255P, Voltage selector
3 13549584 NADA-784, Power amplifier switch(W) (on the back panel)
p.c.b. 7 G model
4 13549586 NAAF-786, Tone amplifier REF
p.c.b. (D) ‘ CIR
13550586B NAAF-786b, Tone amplifier No, CIRCUIT NO. PARTS NO. DESCRIPTION
p.c.b. (W) 1 13552581 NARFE-781, FM/AM tuner and
5 13549585 NAPS-785, Power supply circuit equalizer amplifier p.c.b.
p.c.b. 2 13549583 NASW-783, Switch p.c.b.
6 13549587 NAPL-787, Meter illumination 3 13549584 NADA-784, Power amplifier
lamp p.c.b. p.c.b.
7 Q503, Q603 222022 STK-00501, Power amplifier IC 4 13552586A NAAF-786a, Tone amplifier
8 T9O1 250350 NPT-696D, Power transformer (D) p.c.b.
250361 NPT-696DG, Power transformer (W) 5 13552585A NAPS-785a, Power supply
9 L152 232066 NMA-3012, AM bar antenna circuit p.c.b.
10 C951 3500054 0.0luF, 125V, CS capacitor(D) 6 13549587 NAPL-787, Meter illumination
C951,C952 3500058 PME265MBS5 10, IS capacitor lamp p.c.b.
(Ww) 7 Q503, Q603 222022 STK-O0050H, Power amplifier IC
11 RS528,R628 441623314 3309, 1W, Metal oxide film 8 TIO] 250351 NPT-696G, Power transformer
resistor 9 L152 232066 NMA-3012, AM bar antenna
12 $706 25065016 NSS-2327, Slide switch 10) C951 3500058 = PME265MB510, IS capacitor
13 P804 25060008 Ground terminal 1] R528, R628 441623314 3309, 1W, Metal oxide film
14. P80S 25060035 NITM-4PRMC06, Antenna resistor
terminal 12 S706 25065016 NSS-2327, Slide switch
15 P806,P807 25060038 NTM-4PRMNO9, Speaker 13 P804 25060008 Ground terminal
terminal 14 P805 25060035 NTM-4PRMC06, Antenna
16 P9O01, P9O2 25050032 S-16444-01, AC outlet terminal
17. W901 253099A AS-UC-3, Power supply cord(D) 15 P806, P807_ = 25060038 +=NTM-4PRMNO9, Speaker
253083 AS-CEE, Power supply cord(W) terminal
18 W90la 270025 SR-3P-4, Strainrelief (D) 17 W901 253083 AS-CEE, Power supply cord
270280 SR-4K-4, Strainrelief (W) 18 W90la 270280 SR-4K-4, Strainrelief
19 F501,F601 252014 4A-T, Speaker protection fuse 19) F501, F601 252014 4A-T, Speaker protection fuse
20 25050004 Fuseholder 20 25050004 Fuseholder
21 F901 252049 4A(ST-6), AC fuse(D) (on the 21 F901 252074 2A-SE-EAK, AC fuse
power supply p.c.b.) F902, F903 252078 S5A-SE-EAK (on the power
252014 4A-T, AC fuse(W) (on the supply p.c.b.)
power supply p.c.b.) 22 27205021 Drive shaft
22 PREEIET Drive shaft * 23 27115058 Side bracket (R)
23 7115058 Side bracket (R) 24 27115059 Side bracket (L)
24 27115059 Side bracket (L) 25 27115060 Center bracket
25 27115060 Center bracket 26 27160062A Radiator
26 27160062A Radiator 27 270760A Dial drum
27 270760A Dial drum 28 273803A SP-14A, Spring
28 273803A SP-14A, Spring 29 273903 Stringing
29 273903 Stringing 30 273812 Spring for pointer lamp
30 273812 Spring for pointer lamp 31 27120201 Back panel (D)

TX-3000
EXPLODED VIEW
DISASSEMBLY
Top Cover
Remove the four screws (4) holding the top cover and side
bracket.
Remove the two screws (3) holding the top cover and back
panel.
Front Panel
Remove the top cover.
Remove the TUNING knob.
Remove the five screws holding the front panel and front
bracket.
Bottom board
Remove the four screws (24) holding the bottom board
and chassis.
Remove the four screws (25) holding the bottom board and
legs.
Meters
Remove the top panel.
Remove the two screws holding the lamp bracket and front
baracket.
Dial Glass
Remove the four screws holding the dial glass and front
panel.
Notes: The dial glass has been mounted by applying an 800
gr torque to the screws. ~
If the dial glass is removed during repairs, and a
torque driver is available, apply 800 gr torque to the
screws when replacing. If however, a torque driver
is not available, simply tighten the screws by hand.
When replacing the dial glass, insert all relevant
component parts (9-13) in accordance with the
exploded view.
Pointer Lamp
Remove the top cover and front panel.
SERVICE PROCEDURES
Sensor Switch (SENSOR)
This switch enables the servo lock system for automatic
FM tuning to be matched with the various operating con-
ditions. Set it at LOW initially. Switch to NORM or HIGH
if the TUNED lamp does not instantly turn off when you
touch the tuning knob.
Power Meter/Signal Strength Meter
When the tuning is not being operated, this meter displays
the level of power applied to the right speaker system. The
instant the tuning knob is touched, the meter changes to
display the signal strength of the radio broadcast being
received at that moment. Tune a station so the needle
moves as far to the right as possible.
De-emphasis switch (Only W model)
The 25 ysec/Normal selector switch for Dolby FM boad-
casts is located on the front panel. The 50 ysec/75 psec
selector switch employed in the W (120/220V) model
is located on the bottom board. When shipped from the
factory, this switch is set to the SO usec position. For use
in 75 psec regions, switch over to the 75 usec position.
Voltage conversion (Only W model)
This set may be set to operated at either 120V or 220V at
50Hz to 60Hz. This voltage selector switch is located on the
back panel. If a voltage change, is necessary, remove the
lock plate, switch to the proper voltage, and replace the
plate.

EXPLODED VIEW — PARTS LIST
(W): Only 12/220 V model
D model
REF.NO. PARTS NO.
1 28184071
2 28140020
3 834430062
4 838440083
5 13549121
6 28125076
7 834130062
8 28191050
~27270014
10 27300038A
11 86213010
12 870051
13 —870052
14 27267063
15 27267064
16 28320399
17 27180049
18 28320398
19 28320396
20 28320408
21 28320397
22 27170071
23 27175009
24 83 1130082
25 831130122
26 28140126
29 27185002A
30 27185006
31 27130192
32 13549131
33 28133023
34 28130087
35 27190065
36 27250039A
37 27250040A
38 28198527
39 25045018
40 243117
243129
4] 243118
243130
42 27130193
43 25030150
44 25035047
45 210078
47 15349599
PRECAUTIONS
Fuses
DESCRIPTION
Top cover
4tx10x40, Cushion
3STS+6BQ(BC), Tapping screw
4STB+8CQ(BC), Tapping screw
Front panel ass’y (5, 6, 14, 15)
End cap
3STS+6 BQ, Tapping screw
Dial glass
Spacer
Special screw
WN3x10FN, Nut
10x3.5x1.5t, Washer
LOx6x1.St, Washer
Guide for power switch knob
Guide for push switch knob
Push switch knob
Spring for knob
Power switch knob
Volume control knob
Tuning knob
Tone control knob
Bottom board
T-C, Leg
3STW+8BQ, Tapping screw
3STW+12BQ, Tapping screw
Cushion
DP-16N, Dial pulley
Dial pulley
Bracket
Pointer ass’y
Back plate
Dial plate
Holder for dial plate
Lamp case (L)
Lamp case (R)
Facet
LJ-100-J, Stereo headphone jack
NIND-05008117 (Pointer: white),
Signal strength and output level
meter
NIND-0500S129 (Pointer: Red)
NIND-0250S118 (Pointer: White),
Center meter
NIND-02508130 (Pointer: Red),
Center meter
Bracket for meter
NRS-144-40Y, Speaker selector
switch
NPS-111L12P, Power switch
PL12V0.03AW-4, Locked, Tuned,
and Stereo indicator lamp
NAPL-799, Dial illumination lamp
p.c.b.
(G): Only 220 V model
G/W model
REF.NO. PARTS NO.
1 28184072
2 28140020
3 834430062
4 838440083
5 13549121
6 28125076
7 834130062
8 28191050
9 27270014
10 27300038B
11 86213010
12 870051
13 870052
14 27267063
15 27267064
16 28320399
17 27180049
18 28320398
19 28320396
20 28320408
21 28320397
22 27170071
23 27175009
24 831130082
25 831130122
26 28140126
29 27185002A
30 27185006
31 27130192
32 13549131
33 28133023
34 28130087
35 27190065
36 27250039A
37 27250040A
38 28198527
39 25045018
40 243117
243129
41 243118
243130
42 27130193
43 25030150
44 25035176
25035034
45 210078
47 15349599
(D): Only 120 V model
TX-3000
DESCRIPTION
Top cover
4tx10x40, Cushion
3STS+6 BQ(BC), Tapping screw
4STB+8CQ(BC), Tapping screw
Front panel ass’y (5, 6, 14, 15)
End cap
3STS+6BQ, Tapping screw
Dial glass
Spacer
Special screw
WN3x10FN, Nut
10x3.5x1.5t, Washer
10x6x1.5, Washer
Guide for power switch knob
Guide for push switch knob
Push switch knob
Spring for knob
Power switch knob
Volume control knob
Tuning knob
Tone control knob
Bottom board
T-C, Leg
3STW+8BQ, Tapping screw
3STW+12BQ, Tapping screw
Cushion
DP-16N, Dial pulley
Dial pulley
Bracket
Pointer ass’y
Back plate
Dia] plate
Holder for dial plate
Lamp case (L)
Lamp case (R)
Facet
LJ-100-J, Stereo headphone jack
NIND-0500S117(Pointer: White),
Signal strength and output level
meter
NIND-0500S129 (Pointer: Red)
NIND-02508118 (Pointer: White),
Center meter
NIND-02608S130 (Pointer: Red),
Center meter
Bracket for meter
NRS-144-40Y, Speaker selector
switch
NPS-111-L140, Power switch (G)
NPS-121-L, Power switch (W)
PL12V0.03AW-4, Locked, Tuned,
and Stereo indicator lamp
NAPL-799, Dial illumination lamp
p.c.b.
For continued protection against fire hazard, replace only with same type and same rating fuse.
Speaker
protection
fuse:
The
speaker
protection
fuse
is
located
on
the
back
panel.
Remove
the
screw
holding
the
fuse
cover and fuse case.
Rating: 4A-T (Parts No.: 252014)
AC
fuse:
Remove
the
top
cover.
The
AC
fuse
is
located
on
the
power
supply
pc
board.
Rating: F901 4A (ST-6) (Parts No.: 252049) (Only 120V model)
F901 2A-SE-EAK (Parts No.: 252074) (Only 220V model)
F902, F903 S5A-SE-EAK (Parts No.: 252078) (Only 220V model)
F901 4A-T (Parts No.: 252014) (Only 120/220V model)
F902
2.5A-T
(Parts
No.:
252025)
(Only
120/220V
model)
(on
the
chassis)

TX-3000
ALIGNMENT PROCEDURES
INSTRUMENTS REQUIRED GENERAL ALIGNMENT CONDITIONS
1. DC Voltmeter 1. Signal input should be kept as low as possible.
2. AM Sweep Generator 2. Standard modulation is 400Hz 30% (AM), 1kHz 100%
3. AM/FM Signal Generator (FM MONO), pilot 9% sub and main 91%(FM STEREO).
4. AC VIVM 3. Standard knob position
5. Oscilloscope SPEAKERS ........-....-2222200250200 23s A
6. Monitorscope BASS, TREBLE & BALANCE ............ Center
7. Distortion Analyzer HIGH FILTER..............-..22- 0005 OFF
8. Stereo Modulator MODE ............. 020200 e teenies STEREO
9. Frequency Counter DE-EMPHA ..............-.-..... NORMAL
LOUDNESS... ee ee es OFF
MUTING LOCK ...................-5.. OFF
TAPE 1,2............0 00 eee OFF (SOURCE)
(1) AM IF ALIGNMENT
1. Set SELECTOR switch to AM.
2. Set radio dial to quiet point.
AM
Sweep
)
Orton
455kHz
X15]
Maximum
Symmetrical
Usually
not
necessary
Response
to
adjust
(2) AM RF ALIGNMENT
Loop Antenna Bar Antenna
=
AM
Signal
60cm
—
\
Output
|
| aM Sil [4 XL Unit AC VTVM Oscilloscope
Lower end
L153 Maximum
eee eee“) us | sn Repeat steps | and
1680kHz Upper end TC152 Maxi 2 as necessary
400Hz 30% (1680kHz) axmarn
600kHz ,
1400kHz ,
(3) FM FRONT END ALIGNMENT
1. Set SELECTOR switch to FM.
2. Connect FM Signal Generator to 300—ohm antenna terminals.
TP
Repeat steps 3 and
4 as necessary

| Oscilloscope
unit [~Jacvrvm
pL Distortion
Analyzer
os
Pees, [ose [vem
ef, [ee Prwrsow] SM" fa
Maximum
98MHz
65dBf
Distortion
,
(4) MULTIPLEX ALIGNMENT
Repeat Steps 1
and 2 as necessary
pe
Tuning
Indicator
Repeat Steps 3
and 4 as necessary
fp
AC VTVM or
Oscilloscope
Repeat Steps 5
and 6 as necessary
EXT. mod. Connet AC VTVM across SPEAKER terminals
L
Stereo FM Signal | 300—ohm ae AC VIVM
8—ohm
FM Signal Generator | Stereo Modulator Output Indicator] Adjust for
98MHz Frequency
H R206 19000+19Hz
STEREO INDICATOR should light up when stereo program is being received.
Pilot Sig. 9%
AC
VTVM
as
cerBe
EXT.
Mod.
|
Main
&
Sub
Sig.
|
98MHz
R202
Right
ch
Maimum
|
1KHz
Lch
91%
.
|
Left ch.
necessary
Main & Sub Sig.
1KHz Rch 91%
4 Same as above

O
T.P (IF IN)
FM
IF AMP. &
DETECTOR
© FM tc TC TC 1C151 TC
DET 152 003 002 001
T101
L153
R206 AM
AM IF ose
M PX
DECORDER 0
T.P(V.C.O) T151
AM
DET
(+) R202
SEP
L202 L201
LOW PASS
FILTER
STRINGING DIAGRAM
1. Close the variable capacitor complete and tie the dial cord to the spring of the drum.
2. Thread the dial cord in the direction of arrow from (1) to @) and wind the dial cord three turns around the tuning
shaft clockwise.
3. Thread the dial cord ©) and@).
4, Wind the dial cord 1% turns around the dial drum.

IC BLOCK DIAGRAM
HA-1137
BLOCK
DIAGRAM
LA3350
BLOCK
DIAGRAM
LAMP
DRIVER
STEREO
INDICATOR
TUFF
290°
1SKHz
PC L-: Phase Comporator tor Lamp
LPF Low Pass Filter
PC ¥ Phase Comparator tor VCO
¥CO
TUF
Voltage Controlled Oscillator
F: Direct Coupted Type Flip-tlop
Substrate Substrate
Out put
HA-1151 EQUIVALENT CIRCUIT
NJM4558D, 4559DX
STK3062
STK-005011

TX-3000
PRINTED CIRCUIT BOARD-PARTS LIST (D/W model)
FM/AM TUNER AND EQUALIZER AMPLIFIER
PC BOARD (NARFE-781la) — PARTS LIST
CIRCUIT NO. PARTSNO. DESCRIPTION
ICs
C304, C404 352721019T 100uF, 6.3V, Elect.
O18! 533418 HeTtSt C309, C409 392880227T 2.2uF, 50V, LL
0201 322449 LA3350 C311, C312 352780339T 3.3uF, SOV, Elect.
0301, Q401 222534 NJM4559DX C702 3$2780109T luF, SOV, Elect.
Q701. 922465 NIM4558D C703 352742209T 22uF, 16V, Elect.
C706 352784799T 0.47uF, 50V, Elect.
Transistors C707 352741009T 10uF, 16V, Elect.
: C708 352784799T 0.47uF, 50V, Elect.
6002 soliede SSC7RSTALOCONK) C709 352732209T 22uF, 10V, Elect.
0003 2211342 2SC461(B) C710 352744709T 47pnF, 16V, Elect.
9211723. Or 2$C1923(R) or C713 352742219 220uF, 16V, Elect.
1710823 3$C1675(L-1) C714 352741009T 1OuF, 16V, Elect.
Q202 2211256 2SC1815(BL) Resistors
Q203 2211256, 2SC1815(BL), -_
Q702~Q704 2211255 or — 2SC1815(GR) or R202 3225024 NIOHRIKBD, Semitixed
contro! variable
Diodes Switch
DOO] 223110 182687
D151,D153. —- 223105 181555
D152 4000022 VD1212 Terminals
Bay p02 IS1959 P801 25045020 -—- NPJ-4PDBL11, Phono/
- Tape rec. 2
223943
RD4.7EB
Tape
pb.
2
Coils Shielded case
LOOL 233106 or NFA-3009 or 27225029
233088-1 FFA-3001 Shielded plate
L002 233112 NFRF-3008 371
L003 233113 NFRF-3009 50085
L004 233152 NFT-1503
L00 L102 233090 NFO-3003 POWER AMPLIFIER PC BOARD
L103. 233114 NCH-1009 (NADA-784) — PARTS LIST
L151 233152 NFT-1503 CIRCUIT NO. PARTSNO. DESCRIPTION
L153 232065 NMO-2002 ICs
L201, L202 233021 or NMC-8-5 or
233107 NMC-5002 35) ; ea 222023 STK3062
NJM4558DX
Transformers ,
Q503,Q603 222022 STK-00501
TOO! 233085 NIT-0518 ,
T101 233101 or NFIF-6003 or Transistors
233083 NIT-3516 Q751,Q752 2211544 28C1959(Y)
T151 232041 NIT-0509 Q903, Q904, = 2211255, 2SC1815(GR),
C e filt Q906 2211256 or 28C1815(BL) or
X101, X102 3010003 SFE-10.7MA Q905 2211455 or 2SA1015(GR) or
X15] 3010004 CFZ-455C 2210803 2SA733(P)
Capacitors Diodes
VCO01~VC004 3050006 NVC-20FQ327WD02, Variable DS01,D502, 223105 181555
TC004 3060003 NTC-10P02, Trimmer D601, D602
C021 352741019T 100uF, 16V, Elect. D751~D754, 223103 or 1N60 or
C106 352750479T 4.7yF, 25V, Elect. D737 223132 1K60
C108 352741009T 10yF, 16V, Elect. D7553,D756 = 233119 1$1588
C109 352782209T 22uF, SOV, Elect. D908 223848 or GP-08B or
C118 352750339T 3.3uF, 25V, Elect. 223804 SR1K-2
C153 372523614 360pF+5%, SOV, ST D909, D910 = 233105 181555
C158 352741009T 10yF, 16V, Elect. Capacitors
C159 352742219 220uF, 16V, Elect.
C162 352780109T 1uF. SOV. Elect. C501,C601 352780339T 3.3uF, SOV, Elect.
C163 352780339T 3.3uF, SOV, Elect. C506, C606 352780109T luF, SOV, Elect.
C165 352721019T = 100uF, 6.3V, Elect. CS10, C511, 352780479T 4.7uF, SOV, Elect.
C201 352744719 470uF, 16V, Elect. C610, C611
C202
352780109T
iuF,
SOV,
Elect.
C513,
C514
392852207T
22uF,
25V,
LL
C203 352741009T 10uF, 16V, Elect. C613, C614
C204 392883397T 0.33uF, 50V, LL C516, C616 352780339T 3.3uF, SOV, Elect.
C205
392882297T
0.22uF,
50V,
LL
C751,
C752
352780229T
2.2uF,
SOV,
Elect.
C206 392884797T 0.47uF, 50V, LL C753, C754 352781009T 10uF, 50V, Elect.
C207 372521524 1,500pF+5%, 50V, ST C921 352753309T 33 uF, 25V, Elect.
C209 352780339T 3.3uF, 50V, Elect. C922 352722219 220uF, 6.3V, Elect.
C211, C212 352781099T 0.1uF, 50V, Elect.
C301, C401 352780229T 2.2uF, 50V, Elect.