Onkyo TX-2500 - TX-2500 FM;AM Schematic Diagram (Change Parts) NAIMX-345

TX-2500
FM/AM
SCHEMATIC
DIAGRAM(Change
Parts)
NAIMX-345
R105
1K
EM IF Ky -10.0V}
Vs R106
Ps : G2SV 100
H O02 «= {ee 10K crow” $rioc
C167 Li05
360PF(K) NMO +2503
4 OSC VC ee 5
C179" R173
NIT 10/25 6.8K
cad C205
10P
i \F)
rei am | od Ao 0120
22
So
HUM Sensor cama
Oe ren
NOTES
C2e
Knob eel
> 20 lov
" RO Gace oa ma R246 C217
2 ae ere 1M 0119 39K OT 1/6
H C3
C106
0.47/50
T101
R110 Mee 3516
5.6K =
T. Meter 7 Pn
MPX
© @ OFF ts oe
—O- O — as == on Cm ee ee ee ee ee ee ee
ae oe saat
3K C
Rize Res
R125 C120 foger bcr3pOTP2
8
15900
2k a PE 022/50 ad oak Ris?
100K
ae
33
C122
000212)
tf C184
SF 220/16
+16259
“Tf 470/16
R225
33K
T? ONT
GB)
re a
ALL RESISTORS ARE IN OHMS, 1/4WATT UNLESS OTHERWISE NOTED.
ALL CAPACITORS ARE IN uF, SOOWV UNLESS OTHERWISE NOTED.
ELECTROLYTIC CAPACITORS (—=#e-) ARE IN nF/WV.
VOLTAGE (MEASURED WITH V.T.V.M)
DC VOLTAGE (NO INPUT SIGNAL).
( v) DC VOLTAGE (FM STEREO)
PUT “'K’”” MARK AT THE BACK OF SERIAL NUMBER AFTER A CHANGE,
2.2750
L10
a R31 oe ees
10K
6 4
“7100/16
MUT
SW ..
Tog nnn nn anne nnnnnenn nnn
ned !
ono on mg on |
TI a
ging] ano
C128 R132
toe 130 1K
= C265
R227
1K
(‘> Q129
$0218 e
en A00/6.3
OOK
R264
10K
6
SERVO LOCKED CIRCUIT ALIGNMENT
1, Set MUTING switch to off.
2. Set the radio dial to center needle deflection on
tuning meter when the FM program source is received.
3. Set MUTING switch to on.
4. Adjust R230 to center needle deflection on tuning meter.
FM/AM PC BOARD(NAIMX-345)-PARTS LIST
CIRCUIT NO.
TRANSISTORS
Q101 |
Q104, Q105
Q107, Qill
Q108 |
Q109, Q110 |
Qil2
Q121, Q122
Q123
Q124
Q125
Q128
Q129
ICs
Q102
Q103
Q106
Q116
Qll7
DIQDES
D101, D106, D102
D107, D108, D110,
D112-D114 D119, D120
D103, D105, D117, D125,
D132
D104
D111
D122
COILS
L102
L103
L104
L105
L106
L107
TRANSFORMERS
T1101
T103
CERAMIC FILTERS
X101, X102
X103
VARIABLE RESISTOR
R118
R127
R154
R157
R230
STOCK NO.
2210123
2210136
2210046-1
2210045
Same as above
2210244
2210943 °*
2210086
2210244
2210943 °F
Same as above
2210085
2210085
222421
222449
222418
222424
222423
2231031
223105
4000022
223945 9,
224012
223943
224011
223105
233024
233074
233032
233104
232013
233018
233031
233101
233083
232041
3010007,
3010006 4,
3010008
3010012
5225013
5225019
§225017
$225024
§225013
| DESCRIPTION, =
2SC380 (O), FM IF Amp.
28C1312 (F), Audio Amp.
28C732 (BL)
2SC732 (GR)
Same as above Mono-ST. Switch
28C735 (Y)
2SC1317 (R)
28C733 (BL), Noise Amp.
2SC735 (Y)
28C1317 (R)
or Transient Killer
or Muting
or Schmitt Trigger
Gate Circuit
Same as above Tuned Lamp Switch
Locked Lamp Switch
2S8C733 (GR),
28C733 (GR), AFC Switch
HA-1137 Quadrature Det.
LA-3350 MPX
HA-1151 AM
TA-7504S OP Amp.
TA-7136P Hum Sensor Amp.
1(N)60(N)FM
181555
VD-1212, Varistor
RDS.1EB
WZ-052
RD4.7EB a
YZ-047
NCH1005 oy
NCCH-1501
NCCH-1506
NMC-8-7 ot
NMC-5001
NMO-2503
NMC-4-11
NMC-9-1
NFIF-6003
NIT-35 16
NIT-0509
or
SFE10.7MA (Blue)
SFE10.7MA (Red)
SFE10.7MA (Orange)
CFZ-45S5B
R-HK100KB3P
R-H4.7KB3M
R-HK1LOKB3P
N1QHRIKBD
R-HK 100KB3P