Page 1
Reference Series
7540a
7541a
4 CHANNEL POWER AMPLIFIER
SERVICE MANUAL
Infinity Systems, Inc.
250 Crossways Park Dr.
Woodbury, New York 11797 Rev
3
10/2005
Page 2
1
Power Amplifier Reference 7540a/7541a
- CONTENTS -
SPECIFICATIONS ………………………………….……..1
FEATURES/TEST CONDITIONS……..…………………2
CONTROLS/CONNECTIONS………….……..…...…..…3
INSTALLATION………………….……...……..…...…...…5
BASIC TROUBLESHOOTING..…….…….………………6
TYPICAL SYSTEM WIRING..…….…….……………..…7
EXPLODED VIEW/PARTS LIST…….….….…………....8
MECHANICAL PARTS LIST……………..…………........9
AMPLIFIER BLOCK DIAGRAM…………………………10
P.C.B. DRAWINGS….…………………………………….11
ELECTRICAL PARTS LIST ……………………………. 15
REF 7541a ELECTRICAL PARTS LIST ADDENDUM….……18
IC/TRANSISTOR PINOUTS..………………………. …..19
REF 7540a SCHEMATICS……………………………....22
REF 7541a SCHEMATICS…………………………..…..25
PACKING……..……………………………………..…....28
Reference 7540a/7541a Specifications
Output Power: 111W RMS x 4 channels @ 4 ohms; ≤1% THD + N
(14.4V supply) 139W RMS x 4 channels @ 2 ohms; ≤1% THD + N
278W RMS x 2 channels @ 4 ohms; ≤1% THD + N
Signal-to-noise ratio: 81dBA (reference 1W into 4 ohms)
Dynamic power: 164W @ 2 ohms
Effective damping factor: 6.315 @ 4 ohms
Frequency response: 10Hz – 100kHz (–3dB)
Maximum input signal: 5.5V
Maximum sensitivity: Reference 7540a - 230mV
Reference 7541a - 75mV
DC Offset <50mV (-50%)
Output regulation: .088dB @ 4 ohms
Idle Current 1.2A
Input Impedance 22kΩ
Max Current Draw 54A @ 4 ohms
83A @ 2 ohms
Dimensions: 12 x 15 x 2 11/16” (L x W x D)
(305mm x 381mm x 68mm)
Fuses: 30A x 2
Infinity continually strives to update and improve existing products, as well as create new ones. The specifications and details in
this and related JBL publications are therefore subject to change without notice.
Page 3
Reference 7540a/7541a
2
Page 4
The Reference amplifiers are capable of
delivering high power levels, and require a
reliable connection to the vehicle’s electrical
system in order to perform optimally. See
Figure 1 for connection location. Please
adhere to the following instructions carefully.
GROUND CONNECTION
Connect the amplifier’s Ground (GND) terminal
to a solid point on the vehicle’s metal chassis,
as close to the amplifier as possible. Refer to the
chart below to determine minimum wire-gauge
size. Sand away any paint from this location; use
a star-type-lock washer to secure the connection.
POWER CONNECTION
Connect a wire (see chart at right for appropriate
gauge) directly to the vehicle’s positive battery
terminal, and install an appropriate fuse holder
within 18" of the battery terminal. Do not
install the fuse at this time. Route the wire to
the amplifier’s location, and connect it to the
amplifier’s positive (+12V) terminal. Be sure to
use appropriate grommets whenever routing
wires through the firewall or other sheet metal.
Failure to adequately protect the positive wire
from potential damage may result in a vehicle
fire. When you are done routing and connecting
this wire to the battery and to the amplifier,
you may install the fuse at the battery. The
fuse value should be selected based on total
amplifier-current draw; see chart at right.
REMOTE CONNECTION
Connect the amplifier’s Remote (REMOTE)
terminal to the source unit’s Remote Turn-On
lead using a minimum of 18-gauge wire. If your
source unit does not have a remote turn-on
connection, connect the amplifier’s (REMOTE)
terminal to the vehicle’s accessory circuit.
SPEAKER CONNECTIONS
Refer to the application guides on the pages
that follow. Speaker connections should be
made using a minimum of 16-gauge wire.
NOTE: When using the low-level or high-level
inputs, the AUX outputs can be used to pass a
full-range line-level signal to another amplifier.
Figure 2. Speaker-level connector.
POWER CONNECTIONS
HIGH LEVEL
INPUT
Speaker Wires
(spliced)
LR
–
L
+
–
R
+
+ WHITE
– WHITE/BLACK
GRAY/BLACK –
GRAY +
Power Amplifier Reference 7540a/7541a
3
WIRE-GAUGE CHART
Figure 1.Terminal-connection end plate.
Amplifier Maximum Minimum
Model Current Draw Wire Gauge
7520a 34A #8 AWG
7540a/7541a 85A #8 AWG
These recommendations assume 7' – 10' wire
runs. If your installation differs markedly, you
will need to adjust the wire gauge accordingly.
HIGH-LEVEL INPUT CONNECTIONS
The 7540a/7541a amplifiers are
equipped with speaker-level inputs that allow
you to add an amplifier to head units that do
not have RCA line outputs. The speaker outputs
for the source unit should be connected to the
amplifier using the supplied connector (square
four-wire plug). Remember to check for proper
polarity.
Page 5
NOTE: For simplicity, Figures 7 through 9 do not
show power, remote and input connections.
NOTE: Minimum speaker impedance for
stereo operation is 2 ohms. Minimum speaker
impedance for bridged operation is 4 ohms.
NOTE: “Bass Boost” only affects rear channels.
Power Amplifier Reference 7540a/7541a
4
APPLICATIONS – 7540a/7541a
The 7540a/7541a can be set up for stereo 4-channel,
3-channel or bridged 2-channel operation, as
shown in Figures 7 through 9.
Figure 7. 7540a/7541a amplifier in 4-channel (stereo) operation to drive front and rear full-range speakers.
Figure 8. 7540a/7541a is set up for 3-channel operation to drive a set of full-range speakers and a subwoofer.
Figure 9. 7540a/7541a used in bridged 2-channel mode to drive a set of components or subwoofers.
Page 6
SETTING THE CROSSOVER(S)
Determine your system plans and set the
crossover-mode switch accordingly. If your
system design does not include a subwoofer,
set the crossover mode to FLAT and skip to
“Setting Input Sensitivity.”
MODE SWITCH
Flat: Allows a full-range signal through to the
speakers; can be used with larger full-range
speakers such as 6" x 9"s.
HP: Allows a high-pass signal through to
the speakers; should be used with most
loudspeakers (can protect your full-range
speakers from being overdriven with low
frequencies, one cause of speaker damage).
LP: Allows bass to pass through to the speakers;
should be selected when powering subwoofers.
Figure 13. Control end panel.
SETTING INPUT SENSITIVITY
1. Initially turn the INPUT LEVEL control(s) to
minimum (counterclockwise).
2. Reconnect the (–) negative lead to the vehi-
cle’s battery. Apply power to the audio system
and play a dynamic music track.
3. On the source unit, increase the volume
control to 3/4 volume. Slowly increase the
INPUT LEVEL control(s) toward three o’clock
until you hear slight distortion in the music.
Then reduce the INPUT LEVEL slightly until
distortion is no longer heard.
INSTALLATION AND SETUP
NOTE: When using the low- or high-level inputs,
the AUX outputs can be used to pass a full-range
line-level signal to another amplifier.
Power Amplifier Reference 7540a/7541a
5
Initially set the crossover-frequency control
midway. While listening to music, adjust the
NOTE: After the source unit is on, blue LEDs (on
the top panel) will light, indicating the amplifier
is on. If not, check the wiring, especially the
remote connection from the source unit. Also
refer to “Troubleshooting” on the page 6.
AUX OUTPUT
Reference amplifiers are equipped
with full-range outputs that can be used to
connect additional amplifiers.
crossover for the least perceived distortion from
the speakers, allowing them to reproduce as
much bass as possible.
Systems using a separate subwoofer set the
crossover mode to HP (high pass) for your
full-range speakers. Adjust the crossover
frequency to limit bass, and provide increased
system volume with less distortion.
For subwoofers, choose the highest frequency
that removes vocal information from the sound
of the subwoofer.
If using the 7540a/7541a to drive a subwoofer(s),
set the crossover mode to LP (low pass).
REMOTE LEVEL CONTROL (OPTIONAL)
All three Reference subwoofer amplifiers
have inputs for an optional
remote level control (100rc). This will allow the
subwoofer level to be adjusted from the listening
position. Connect the optional remote level
control using the RJ-11 jack on the side of the
amplifier. Install the control module in the front
of the vehicle within easy reach of the driver.
Both the underside of the dash and the center
console are suitable locations. Refer to the
mounting instructions accompanying the 100rc.
SETTING THE BASS BOOST
The 7540a/7541a are all equipped
with a bass-boost control. This allows you to
enhance the bass output of your system at
50Hz up to 12dB.
NOTE: Only rear channels of the 7540a/7541a are
affected by the bass boost control.
Page 7
STATUS LEDs
Clip: Indicates the amplifier is being overdriven,
and your speakers may be in danger. This
should blink only on musical peaks, and not
be on constantly.
Power: Indicates the amplifier is on.
Protection: Refer to “Troubleshooting” for specific
indications.
Figure 15. LED status.
•
PROBLEM:
No audio (POWER LED is off).
CAUSE and SOLUTION:
No voltage at BATT+ and/or REM terminals, or
bad or no ground connection. Check voltages
at amplifier terminals with VOM.
•
PROBLEM:
No audio (PROTECT LED flashes every
4 seconds).
CAUSE and SOLUTION:
DC voltage on amplifier output. Amplifier may
need service; see enclosed warranty card for
service information.
•
PROBLEM:
No audio (PROTECT LED is on).
CAUSE and SOLUTION:
Amplifier is overheated. Make sure amplifier
cooling is not blocked at mounting location;
verify that speaker-system impedance is within
specified limits.
•
PROBLEM:
No audio (PROTECT and POWER LEDs flash).
CAUSE and SOLUTION:
Voltage less than 9V on BATT+ connection.
Check vehicle charging system.
•
PROBLEM:
No audio (PROTECT LED is on).
CAUSE and SOLUTION:
Voltage greater than 16V or less than 8.5V on
BATT+ connection. Check vehicle charging
system.
•
PROBLEM:
Distorted audio.
CAUSE and SOLUTION:
Input sensitivity is not set properly, or amplifier
or source unit is defective. Check INPUT LEVEL
setting, or check speaker wires for shorts or
grounds.
•
PROBLEM:
Distorted audio (PROTECT LED flashes).
CAUSE and SOLUTION:
Short circuit in speaker or wire. Remove
speaker leads one at a time to locate shorted
speaker or wire, then repair.
•
PROBLEM:
Music lacks “punch.”
CAUSE and SOLUTION:
Speakers are not connected properly. Check
speaker connections for proper polarity.
TROUBLESHOOTING
Power Amplifier Reference 7540a/7541a
6
Page 8
Reference 7540a/7541a
7
Page 9
A
8
B
Reference 7540a/7541a
C
D
E
71 2 3 4 5 6 8
Page 10
Power Amplifier Reference 7540a/7541a
9
Page 11
Power Amplifier Reference 7540a/7541a
10
7540a/7541a BLOCK DIAGRAM
Page 12
Reference 7540a/7541a
11
L/CH
4.7/0.5W
R261
D41
D42
J83
Q181
C3198GR
Q281
C3198GR
C181
100/16V
C3200GR
Q435
Q440
Q445
C3200GR
Q335
Q340
Q345
R262
680/2W
4.7/0.5W
200K
R269
YG225D2
J11012.5m/m
YG225D2
J10817.5m/m
J107
17.5m/m
15m/m
TIP35C
TIP36C
17.5m/m
TIP35C
TIP36C
U310
R366
1K
102P
C301
680/2W
R461
1SS133
1SS133
200K
R469
55m/m
J98
J97
J320
J10912.5m/m
12.5m/m
J94
J93
12.5m/m
12.5m/m
J92
J91
12.5m/m
12.5m/m
J90
J89
12.5m/m
J8212.5m/m
J8112.5m/m
J80
7.5m/m
7.5m/m
J79
56K
56K
15m/m
15m/m
20m/m
22m/m
0.1/3W
22m/m
22m/m
22m/m
22m/m
0.1/3W
J12611m/m
J12711m/m
22m/m
0.1/3W
22m/m
22m/m
22m/m
22m/m
0.1/3W
NJM2068LD
6m/m
R365
J229
1K
47KF
R303
C306
47KF
R306
6m/m
J230
C304
C305
47KF
R305
6m/m
J231
47KF
R302
RCA301
22KF
R301
DJB-562D
104(M)
C261
R462
C461
104(M)
104(M)
C32
W1
105(M)TL
D269
C31
D469
CLIP
BJ07
20m/m
20m/m
20m/m
R381
R481
J117
J321
J118
R460
7.5m/m
J129
J131
R465
R466
1K
22P
10P
22P
22/16V"SRE"
C302
C303
R401
J42
R/CH
1K
22K
10
6m/m
R13
24K
68K
24K
U01
820
10K
13m/m
104P
1K
R32
R33
47/25V
R34 15K
J112
L01
J113
J114
10m/m
J72
R281
56K
J250
56K
17.5m/m
100P
C441
R441
R431
C431
100P
R432
1K
R442
R434
820F
100/16V
C471
R444
68P
R433
R421
100P
R443
C420
C341
100P
R341
R331
C331
100P
R332
1K
R342
R334
820F
C371
R344
R333
68P
R321
R343
100P
C320
R320
270K
270K
R423
22/16V"SRE"
22/16V"SRE"
C423
10K
R422
R322
C3198GR
Q02
R05
A1266GR
Q11
R12
47/16V
C14
J52
10/16V
C800
Q01
R01
100/16V
C13
10/0.5W
R03
A1268GR
Q22
12.5m/m
12.5m/m
CL-510
12.5m/m
12.5m/m
J71
J67
2.2/50V
2.2/50V
5.6K
5.6K
2.2/50V
2.2/50V
2.2/50V
5.6K
5.6K
100/16V
2.2/50V
5.6KF
104P
R424
C424
SW302
JSS2219
J43
7.5m/m
7.5m/m
WF-9604
FH01
J40
J41
10m/m
10m/m
7.5m/m
7.5m/m
R04
56K
J39
J38
R63430K
8.2K
100/16V
4.7K
3.9K
J310
104P
20m/m
4.7KF
10K
10.5KF
6m/m
1SS133
A1266GR
TL494CN
220/0.5W
220/0.5W
A1266GR
1SS133
15m/m
10m/m
10m/m
10m/m
A1023Y
4.7K
J58
J57
J56
22K
33K
J59
25m/m
L02
C63
CL-510
473P
J66
10m/m
10m/m
C62
J65
J64
22m/m
22m/m
J63
17.5m/m
LWL0640-03P
2NDPOWER
J116
YELLOW
6m/m
1K
BK
220/16V
1K
C291
1N4744
D291
22
22
10m/m
22
J147
22KF
22
C192
5.6KF
R420
10m/m
J148
J149
1K
1K
22
22
22
7.5m/m
22KF
J150
J151
22
C410
104P
6m/m
J203
J202
20m/m
C210
11m/m
J205
J206
20m/m
J207
20m/m
270K
22/16V"SRE"
MONO MONOSTEREO STEREO
WT-9519
TER02
680/2W
4.7/0.5W
R361
R362
R92
104(M)
Q90
C3198GR
C361
R91
680/2W
R90 47K
R162
C161
R15
R161
J53
4.7/0.5W
473P
120m/m
WIRE
D369
1SS133
LWL0640-02P
1SS133
D169
BK
17.5m/m
17.5m/m
17.5m/m
17.5m/m
17.5m/m
15m/m
15m/m
15m/m
15m/m
15m/m
R369
200K
200K
R169
20m/m
20m/m
20m/m
J11120m/m
1STPOWER
J330
J104
J103
J10217.5m/m
J101
J10017.5m/m
J99
J8817.5m/m
J87
J86
J8517.5m/m
J84
J78
J76
J75
J74
J73
A1266GR
Q12
R21
6m/m
J54
C12
100/16V
R25
102(M)
C21
R22
6m/m
J55
R16
4.7K
R02
C3198BL
Q21
R14
LWL0640-03P
J251
C22
RED
R31
10/25V
C15
BK
1SS133
D11
6m/m
J252
C16
15K
R35
J115
10m/m
C51
470/50V
470/50V
C61
J7720m/m
R181
J70
23m/m
7.5m/m
J144
C3200GR
1.5K
J119
J12019m/m
J121
J122
J123
J124
R470
J128
J130
R360
10m/m
J13422m/m
J135
J136
J137
R370
J228
1K
12.5m/m
NJM2068LD
U301
22/16V"SRE"
C402
22KF
102P
C401
LR
Q451
R451
10K
C451
R452
47
1SS133
R436
D451
A1266GR
6m/m
J125
Q433
J143
C1027Y
C432
Q434
3.9K
R435
R437
13.7KF
C3198GR
R471
Q432
22m/m
6m/m
J142
R472
A1266GR
473(M)
Q442
C440
2.7K
C3198GR
R447
Q431
120
R450
C421
A1023Y
A1266GR
Q444
Q441
6m/m
J141
C442
1K
6m/m
R445
C3198GR
Q443
47
R446
1.5K
C3200GR
R351
Q351
10K
J132
R352
C351
1SS133
47
J133
D351
R336
6m/m
A1266GR
J140
Q333
C1027Y
C332
Q334
3.9K
R337
R335
C3198GR
13.7KF
R371
Q332
473(M)
R372
C340
A1266GR
2.7K
R347
Q342
120
C3198GR
R350
Q331
A1023Y
J13812.5m/m
Q344
C321
6m/m
A1266GR
J139
Q341
1K
R345
C342
C3198GR
47
Q343
R346
CON301-1
TM2501-DG-14P
RR-OUT
GNDS
+15V
RL-IN
RL-OUT
-15V -15V
RR-IN
10m/m
J223
10m/m
J224
1K
R407
22P
C405
47KF
R405
7.5m/m
47KF
R402
J222
6m/m
J225
10P
C404
47KF
270K
R406
R324
R323
10m/m
J226
10m/m
22/16V"SRE"
J227
22P
C406
47KF
R403
22/16V"SRE"
22/16V"SRE"
C323
C324
1K
R307
10K
C403
HI301
LAD1140-04PBK
J29
J30
7.5m/m
7.5m/m
7.5m/m
7.5m/m
J31
BJ06
J32
10m/m
10m/m
10m/m
10m/m
6m/m
35m/m
J33
6m/m
1N5404
D01
J300
J4912.5m/m
J5012.5m/m
12.5m/m
J48
J4712.5m/m
J4612.5m/m
J4512.5m/m
C03 104P
2200/25V"WL"
C05
L03
2200/25V"WL"
C04
J4412.5m/m
2200/25V"WL"
C06
J26
J37
J36
R11
C11
C60
R62
R60
J35
D03
Q33
R51
R41
Q23
D04
J51
J34
CL-310
(0.7x15):(0.7x4):(0.7x1):(0.7x1)
4T:11T:8T:8T
44PHI
T01
SCREW
15m/m
15m/m
7540a
4700/50V"HC"
C52
J61
J60
17.5m/m
J62
C3200GR
2.2/50V
Q251
C241
R241
R231
2.2/50V
C231
5.6K
R232
5.6K
R242
R234
100/16V
C271
R244
R233
22KF
R221
R243
2.2/50V
C220
2.2/50V
C141
R141
R131
2.2/50V
C131
5.6K
R132
5.6K
R142
R134
100/16V
C171
R144
R133
22KF
R121
R143
2.2/50V
C120
5.6KF
R120
J201
6m/m
J204
270K
R123
R124
22/16V"SRE"
C124
C123
10K
R122
SW102
JSS2219
1K
C251
1SS133
1K
D251
A1266GR
Q233
C232
R235
C3198GR
Q232
22
R272
A1266GR
22
Q242
C3198GR
22
Q231
C221
A1266GR
Q241
22
C242
C3198GR
Q243
C3200GR
Q151
1K
C151
1SS133
1K
D151
A1266GR
Q133
C132
R135
22
C3198GR
Q132
R172
A1266GR
22
Q142
C3198GR
22
Q131
C121
A1266GR
22
Q141
C142
C3198GR
Q143
104P
C400
104P
C200
270K
270K
R223
22/16V"SRE"
22/16V"SRE"
C224
C223
10K
R222
100P
R252
R236
J156
100P
1K
R237
R271
820F
C240
R250
68P
100P
R245
R246
R151
100P
R152
R136
J154
J153
100P
Q134
1K
R137
R171
820F
C140
R147
R150
68P
Q144
J152
100P
R145
R146
TM2501-DG-14P
FR-OUT
FL-OUT
270K
6m/m
R224
J219
22/16V"SRE"
HI101
R+R+ L+L+
R-R-
C191
D191
330/16V
10m/m
C292
SCREW
7.5m/m
7.5m/m
SCREW
220/16V
1N4744
5.6KF
R220
330/16V
6m/m
J200
LAD1140-04PBK
J331
J25
R251
6m/m
C1027Y
Q234
13.7KF
473(M)
R247
A1023Y
Q244
J155
7.5m/m
C1027Y
13.7KF
473(M)
A1023Y
CON101-1
GNDS
47KF
47KF
6m/m
J218
10K
6m/m
6m/m
47KF
6m/m
6m/m
J28
3.9K
6m/m
1.5K
10K
3.9K
2.7K
1K
47
R207
R103
R106
22P
C106
R102
J216
J217
10P
C104
R107
TM0006-01
IN4004
D02
105(M)"TL"
7.5m/m
7.5m/m
7.5m/m
7.5m/m
7.5m/m
J27
222(M)
100/2W
R30
4700/50V"HC"
1.5K
47
J165
2.7K
120
1K
47
J172
47
120
FR-IN
+15V
FL-IN
10m/m
J208
10m/m
J209
1K
47KF
22/16V"SRE"
1K
C102
C101
L-L-
35m/m
W2
WIRE
105(M)TL
20m/m
J0
B
7.5m/m
J323
10m/m
J22
10m/m
J24
35m/m
BJ09
8
47
R56
17.5m/m
J05
J0617.5m/m
55m/m
55m/m
J322
47
R55
17.5m/m
J07
J0817.5m/m
47
R54
J09
17.5m/m
J21
J1017.5m/m
1K
R52
47
R53
J1117.5m/m
J23
J1217.5m/m
C01
7.5m/m
10m/m
10m/m
BJ04
R46
47
55m/m
17.5m/m
BJ03
J13
17.5m/m
J14
R45
47
17.5m/m
J15
J1617.5m/m
R44
47
J1717.5m/m
J1817.5m/m
R42
1K
R43
47
J19
17.5m/m
J2017.5m/m
R61
C33 473P
C08
10K
3RD
3RD.
D53
D54
D52
D51 FR154
FR154
FR154
FR154
C53473P
150/2W
150/2W
R291
R191
15m/m
J157
J158 22m/m
J159 15m/m
0.1/3W
J166
R260
7.5m/m
17.5m/m
J160
20m/m
22m/m
J161
22m/m
J162
22m/m
J163
22m/m
J164
J16711m/m
J16811m/m
17.5m/m
J169
J170
6m/m
0.1/3W
R270
J171 22m/m
7.5m/m
J173 22m/m
0.1/3W
R160
J174 22m/m
J175 22m/m
J176 22m/m
J177 22m/m
J178 22m/m
J179
19m/m
0.1/3W
R170
U110
R266
NJM2068LD
U101
R105
22P
C105
22/16V"SRE"
C103
22KF
R101
102P
RR
Q145
NJM2068LD
R165
R265
R166
J210
1K
10m/m
1K
1K
1K
22P
C126
10KF
R126
R128
15m/m
10KF
J213
R125
22P
6m/m
C205
J211
NJM2068LD
47KF
R205
R127
6m/m
J214
R227
10m/m
10KF
R225
J215
6m/m
10P
C204
22P
47KF
C226
R203
10KF
22P
U111
R226
C206
47KF
R228
R206
22/16V"SRE"
22/16V"SRE"
47KF
R202
4.7/50V"SRE"
C128
C203
C202
100K
22KF
R129
R201
102P
C201
LL
RCA101
DJB-554A
60m/m
FQP50N06
Q56
FQP50N06
Q55
FQP50N06
Q54
FQP50N06
Q53
FQP50N06
Q46
FQP50N06
Q45
FQP50N06
Q44
FQP50N06
Q43
TH01
4.7/50V
C67
4.7/50V
C57
TIP35C
C3200GR
Q235
TIP36C
Q245
TIP35C
Q135
C3200GR
TIP36C
1K
1K
1K
J212
1K
4.7/50V"SRE"
C228
100K
R229
FTD5-350
Q240
Q140
Page 13
Reference 7540a/7541a
12
W2
C34
Q56
Q55
Q54
Q53
Q46
Q45
Q44
Q43
TH01
3RD.
D51
C67
C57
J157
Q235
Q240
J167
J168
Q245
Q140
Q145Q135
R166
C126
R126
R128
R125
J211
R127
R227
R225
J212
C226
U111
R226
R228
C228
R229
TER01
D02
C01
R56
J05
J06
R55
J07
J08
R54
J09
J10
R52
R53
J11
J12
R46
J13
J14
R45
J15
J16
R44
J17
J18
R42
R43
J19
J20
C08
C33
R61
R30
3RD
D53
D54
D52
C53
R291
R191
J158
J159
R260
J160
J161
J162
J163
J166
J164
J169
R270
J171
J172
J173
R160
J174
J175
J176
J177
J178
J179
R170
U110
R165
R265
R266
J210
J208
J209
J213
C205
R205
J214
J215
C204
R203
U101
C206
R105
R206
C105
C203
C202
RCA101
C103
R201
R101
R129
C201
C128
D01
C03
C05
C04
C52
R251
R252
R236
J156
Q234
R237
R271
J165
C240
R247
R250
Q244
J155
R245
R246
J170
R151
R152
R136
J154
J153
Q134
R137
R171
C140
R147
R150
Q144
J152
R145
R146
CON101-1
R207
R103
R106
C106
R102
J216
J217
C104
R107 R202
J218
C102
C101
HI101
C06
J60
Q251
C251
D251
Q233
C232
R235
Q232
R272
Q242
Q231
C221
Q241
C242
Q243
Q151
C151
D151
Q133
C132
R135
Q132
R172
Q142
Q131
C121
Q141
C142
Q143
R224
J219
C224
R222R122
L03
T01
C62
J61
J62
C241
J116
R241
R231
C191
C231
R232
R242
D191
R234
C271
R244
R233
R221
R243
C192
C220
R220
J149
C141
R141
C292
R131
C131
R132
R142
R134
C171
R144
R133
J151
R121
R143
C120
R120
J200
J201
C400
J202
J204
C200
J206
J207
R123
R124
R223
C123
C223
C124
SW102
R04
Q02
R63
R05
R11
Q11
R12
C11
C60
C14
J310
R13
R62
R60
J52
D03
U01
Q33
R51
R41
Q23
D04
J51
C800
Q01
R01
C13
R03
R32
R33
Q22
R34
J112
J113
J59
L01
J72
L02
J71
C63
J64
J65
J67
J66
J250
J63
C441
2NDPOWER
R441
R431
C431
C291
R432
R442
D291
R434
C471
R444
J147
R433
R421
R443
C420
R420
J148
C341
R341
R331
C331
R332
R342
R334
C371
R344
R333
J150
R321
R343
C320
R320
J203
C410
J205
C210
R424
C424
SW302
TER02
R362
J114
R322 R422
R35
R181
J115
J70
CON301-1
R323
C323
HI301
R361
C361
R162
R161
J111
R369
D369
D169
R169
1STPOWER
J252
J330
J104
J103
J102
J101
J100
J99
J88
J87
J86
J85
J84
J78
J77
J76
J75
J74
J73
J144
R451
R452
R436
J143
Q434
R437
R471
J125
J142
C440
R447
R450
Q444
J141
R445
J130
R446
R351
R352
J132
R336
J140
Q334
R337
R371
C340
R347
R350
Q344
J138
J139
R345
R346
J223
J224
R407
C405
R405
R402
J225
J222
C404
R406
J226
J227
R324
C406
R403
C324
R307
C403
C401
R92
Q90
R91
R90
R15
J53
Q12
R21
J54
C12
R25
C21
R22
J55
R16
R02
Q21
R14
J251
C22
R31
C15
D11
C16
C51
C61
R281
Q451
C451
D451
Q433
C432
R435
Q432
R472
Q442
Q431
C421
Q441
C442
Q443
Q351
C351
D351
Q333
C332
R335
Q332
R372
Q342
Q331
C321
Q341
C342
Q343
R423
C423
R262
C261
R261
R462
R461
C461
C161
C32
W1
C31
R269
D269
D469
R469
CLIP
J98
J97
J320
J94
J93
BJ07
J92
J91
J90
J89
J82
J81
R381
R481
J117
J321
J118
J119
R460
J120
J121
J122
J123
J124
R470
J128
J129
R360
J133
J134
J135
J136
J137
R370
R466
J228
R303
C306
R306
J230
C304
C305
R305
J231
U301
R302
C402
C303
R401
RCA301
D41
D42
J83
J80
Q181
J79
Q281
C181
Q435
Q440
J126
J127
Q445
J131
Q335
Q340
Q345
U310
R465
R365
J229
R366
C302
C301
R301
Page 14
Reference 7540a/7541a
13
Page 15
Reference 7540a/7541a
14
Page 16
Reference 7540a/7541a
15
Electrical Parts List
TRS-00-00087 TRANSISTOR SMALL SIGNAL PNP KTA1023Y Q01,144,244,344,444 5
TRS-00-00088 TRANSISTOR SMALL SIGNAL NPN KTC1027Y Q134,234,334,434 4
TRS-00-00091 TRANSISTOR SMALL SIGNAL PNP KTA1268GR Q22 1
TRS-00-00111 TRANSISTOR SMALL SIGNAL NPN KTC3200GR Q151,251,351,451 4
TRS-00-00110 TRANSISTOR SMALL SIGNAL NPN KTC3198GR Q02,90,131,132,143,181,231,232,243,281 16
Q331,332,343,431,432,443
TRS-00-00090 TRANSISTOR SMALL SIGNAL PNP KTA1266GR Q11,12,23,33,133,141,142,233,241,242 16
Q333,341,342,433,441,442
TRS-00-00109 TRANSISTOR SMALL SIGNAL NPN KTC3198BL Q21 1
DIO-00-00108 DIODE FAST RECOVERY FR154 D51,52,53,54 4
DIO-00-00003 DIODE RECTIFIER IN4004 D02 1
DIO-00-00006 DIODE SWITCHING SIGNAL 1SS133 D03,04,11,151,169,251,269,351,369,451 11
D469
RES-00-00586 RESISTOR METAL FILM 1/5WF 820 OHM R172,272,372,472 4
RES-00-00523 RESISTOR METAL FILM 1/5WF 4.7K OHM R62 1
RES-00-00545 RESISTOR METAL FILM 1/5WF 5.6K OHM R120,220,320,420 4
RES-00-00402 RESISTOR METAL FILM 1/5WF 10K OHM R125,126,225,226 4
RES-00-00399 RESISTOR METAL FILM 1/5WF 10.5K OHM R60 1
RES-00-00417 RESISTOR METAL FILM 1/5WF 13.7K OHM R171,271,371,471 4
RES-00-00467 RESISTOR METAL FILM 1/5WF 22K OHM R101,121,201,221,301,321,401,421 8
RES-00-00537 RESISTOR METAL FILM 1/5WF 47K OHM R102,103,105,106,202,203,205,206,302,303 16
R305,306,402,403,405,406
RES-00-00610 RESISTOR CARBON FILM 1/5WJ 10 OHM R15 1
RES-00-00660 RESISTOR CARBON FILM 1/5WJ 22 OHM R133,134,143,144,233,234,243,244,333,334 16
R343,344,433,434,443,444
RES-00-00716 RESISTOR CARBON FILM 1/5WJ 47 OHM R43,44,45,46,53,54,55,56,136,146 16
R236,246,336,346,436,446
RES-00-00615 RESISTOR CARBON FILM 1/5WJ 120 OHM R150,250,350,450 4
RES-00-00756 RESISTOR CARBON FILM 1/5WJ 820 OHM R16 1
RES-00-00633 RESISTOR CARBON FILM 1/5WJ 1K OHM R31,42,52,92,107,127,128,131,135,141 36
R145,165,166,207,227,228,231,235,241,245
R265,266,307,331,335,341,345,365,366,407
R431,435,441,445,465,466
RES-00-00598 RESISTOR CARBON FILM 1/5WJ 1.5K OHM R151,251,351,451 4
RES-00-00644 RESISTOR CARBON FILM 1/5WJ 2.7K OHM R147,247,347,447 4
RES-00-00676 RESISTOR CARBON FILM 1/5WJ 3.9K OHM R12,137,237,337,437 5
RES-00-00702 RESISTOR CARBON FILM 1/5WJ 4.7K OHM R01,02,11 3
RES-00-00720 RESISTOR CARBON FILM 1/5WJ 5.6K OHM R132,142,232,242,332,342,432,442 8
RES-00-00751 RESISTOR CARBON FILM 1/5WJ 8.2K OHM R05 1
RES-00-00608 RESISTOR CARBON FILM 1/5WJ 10K OHM R13,14,61,122,152,222,252,322,352,422 11
R452
RES-00-00623 RESISTOR CARBON FILM 1/5WJ 15K OHM R34,35 2
RES-00-00658 RESISTOR CARBON FILM 1/5WJ 22K OHM R32,91 2
RES-00-00663 RESISTOR CARBON FILM 1/5WJ 24K OHM R21,22 2
RES-00-00687 RESISTOR CARBON FILM 1/5WJ 33K OHM R33 1
RES-00-00714 RESISTOR CARBON FILM 1/5WJ 47K OHM R90 1
RES-00-00730 RESISTOR CARBON FILM 1/5WJ 56K OHM R04,181,281,381,481 5
RES-00-00742 RESISTOR CARBON FILM 1/5WJ 68K OHM R25 1
RES-00-00604 RESISTOR CARBON FILM 1/5WJ 100K OHM R129,229 2
RES-00-00647 RESISTOR CARBON FILM 1/5WJ 200K OHM R169,269,369,469 4
RES-00-00664 RESISTOR CARBON FILM 1/5WJ 270K OHM R123,124,223,224,323,324,423,424 8
RES-00-00706 RESISTOR CARBON FILM 1/5WJ 430K OHM R63 1
RES-00-00053 RESISTOR METAL FILM 1/2WJ 4.7 OHM R161,261,361,461 4
RES-00-00018 RESISTOR METAL FILM 1/2WJ 10 OHM R03 1
RES-00-00038 RESISTOR METAL FILM 1/2WJ 220 OHM R41,51 2
ELC-00-00223 CAPACITOR ELECTROLYTIC "SMS" 2.2/50V C120,131,141,220,231,241,320,331,341,420 12
C431,441
ELC-00-00229 CAPACITOR ELECTROLYTIC "SMS" 4.7/50V C57,67 2
ELC-00-00195 CAPACITOR ELECTROLYTIC "SMS" 10/16V C800 1
ELC-00-00203 CAPACITOR ELECTROLYTIC "SMS" 10/25V C15 1
ELC-00-00198 CAPACITOR ELECTROLYTIC "SMS" 47/16V C14 1
ELC-00-00205 CAPACITOR ELECTROLYTIC "SMS" 47/25V C16 1
Page 17
Reference 7540a/7541a
16
Electrical Parts List cont'd
ELC-00-00199 CAPACITOR ELECTROLYTIC "SMS" 100/16V C11,12,13,171,181,271,371,471 8
ELC-00-00200 CAPACITOR ELECTROLYTIC "SMS" 220/16V C191,291 2
ELC-00-00201 CAPACITOR ELECTROLYTIC "SMS" 330/16V C192,292 2
ELC-00-00250 CAPACITOR ELECTROLYTIC "SRE" 4.7/50V C128,228 2
ELC-00-00641 CAPACITOR ELECTROLYTIC "SRE" 22/16V C102,103,123,124,202,203,223,224,302,303 16
MYC-00-00020 CAPACITOR MYLAR 5% 100V 102(M) J C21 1
MYC-00-00031 CAPACITOR MYLAR 5% 100V 222(M) J C08 1
MYC-00-00038 CAPACITOR MYLAR 5% 100V 473(M) J C140,240,340,440 4
MYC-00-00094 CAPACITOR MYLAR 5% 100V 104(M) J C161,261,361,461 4
MYC-00-00085 CAPACITOR MYLAR 5% 63V "TL" 105(M) J C01,31,34 3
CEC-00-00077 CAPACITOR CERAMIC DISK 50V "NPO" 10P F C104,204,304,404 4
CEC-00-00090 CAPACITOR CERAMIC DISK 50V "NPO" 22P F C105,106,126,205,206,226,305,306,405,406 10
CEC-00-00108 CAPACITOR CERAMIC DISK 50V "NPO" 68P F C121,221,321,421 4
CEC-00-00073 CAPACITOR CERAMIC DISK 50V "NPO" 100P F C132,142,151,232,242,251,332,342,351,432 12
CEC-00-00074 CAPACITOR CERAMIC DISK 50V 102P F C101,201,301,401 4
CEC-00-00102 CAPACITOR CERAMIC DISK 50V 473P F C32,33,53,63 4
CEC-00-00076 CAPACITOR CERAMIC DISK 50V 104P F C03,22,60,200,210,400,410 7
JUP-00-00043 JUMPER 0OHM JUMPER 6m/m J33,52,53,54,55,116,130,139,140,141 33
JUP-00-00044 JUMPER 0OHM JUMPER 7.5m/m J25,26,27,28,29,30,31,32,40,41 26
JUP-00-00045 JUMPER 0OHM JUMPER 10m/m J21,22,23,24,34,35,36,37,38,39 29
JUP-00-00052 JUMPER 0OHM JUMPER 11m/m J126,127,167,168,205 5
JUP-00-00046 JUMPER 0OHM JUMPER 12.5m/m J44,45,46,47,48,49,50,71,72,81 23
JUP-00-00059 JUMPER 0OHM JUMPER 13m/m J251 1
JUP-00-00047 JUMPER 0OHM JUMPER 15m/m J51,60,61,73,74,75,76,78,83,117 14
JUP-00-00048 JUMPER 0OHM JUMPER 17.5m/m J05,06,07,08,09,10,11,12,13,14 33
JUP-00-00074 JUMPER 0OHM JUMPER 19m/m J120,179 2
JUP-00-00049 JUMPER 0OHM JUMPER 20m/m J77,97,98,103,104,111,118,166,202,206 14
JUP-00-00075 JUMPER 0OHM JUMPER 22m/m J66,67,119,121,122,123,124,125,128,133 26
JUP-00-00076 JUMPER 0OHM JUMPER 23m/m J70 1
JUP-00-00042 JUMPER 0OHM JUMPER 25m/m J59 1
ICO-00-00022 I.C P.W.M TL494CN U01 1
ICO-00-00112 I.C DUAL OP AMP "SIP-08P" NJM2068LD U101,110,111,301,310 5
FET-00-00023 F.E.T N-CH MOSFET FQP50N06 Q43,44,45,46,53,54,55,56 8
TRS-00-00188 TRANSISTOR AUDIO POWER NPN TIP35C Q135,235,335,435 4
TRS-00-00207 TRANSISTOR AUDIO POWER PNP TIP36C Q145,245,345,445 4
TRS-00-00111 TRANSISTOR SMALL SIGNAL NPN KTC3200GR Q140,240,340,440 4
DIO-00-00152 DIODE FAST RECOVERY YG225D2 D41,42 2
DIO-00-00048 DIODE RECTIFIER 1N5404 D01 1
DIO-00-00206 DIODE ZENER 1W 15V 1N4744A D191,291 2
RES-00-01046 RESISTOR MOR/S 2WJ 100 OHM (3.8x11m/m) R30 1
RES-00-01264 RESISTOR MOR/S 2WJ 150 OHM (3.8x11m/m) R291 1
RES-00-01265 RESISTOR MOR/S 2WJ 150 OHM (3.8x11m/m) R191 1
RES-00-01041 RESISTOR MOR/S 2WJ 680 OHM (3.8x11m/m) R162,262,362,462 4
RES-00-00895 RESISTOR
WIRE WOUND 3WJ
0.1 OHM (5.5x15m/m) R160,170,260,270,360,370,460,470 8
C323,324,402,403,423,424
C442,451
J142,143,152,153,155,156,170,200,203,204
J211,212,214,216,217,218,219,225,229,230
J231,252,300
J42,43,79,80,129,144,150,151,154,165
J172,201,222,322,323,331
J56,57,58,64,65,114,115,132,147,148
J149,208,209,210,215,223,224,226,227
J82,89,90,91,92,93,94,109,110,112
J113,138,228
J157,159,213,321
J15,16,17,18,19,20,62,63,84,85
J86,87,88,99,100,101,102,107,108,131
J160,169,250
J207,310,320,330
J134,135,136,137,158,161,162,163,164,171
J173,174,175,176,177,178
Page 18
Reference 7540a/7541a
17
Electrical Parts List cont'd
THS-00-00013 THERMISTOR NTC RESISTOR FTD5-350 TH01 1
ELC-00-00234 CAPACITOR ELECTROLYTIC "SMS" 470/50V (12.5x20m/m) C51,61 2
ELC-00-00727 CAPACITOR ELECTROLYTIC "WL" 2200/25V (16x25m/m) C04,05,06 3
ELC-00-00714 CAPACITOR ELECTROLYTIC "HC/DL" 4700/50V (25x30m/m) C52,62 2
COR-TF-00405 CORE 44PHI MAGNETICS
COI-00-00093 INDUCTOR DRUM COIL CL-510 L01,02 2
COI-00-00028 INDUCTOR BAR COIL CL-310 L03 1
SWI-00-00024 SWITCH SLIDE SWITCH JSS-2219 SW102,302 2
JAC-00-00043 RCA JACK GOLD PLATED DJB-554A RCA101 1
JAC-00-00042 RCA JACK GOLD PLATED DJB-562D RCA301 1
TER-00-00030 TERMINAL GOLD PLATED TM0006-01 (3P) TER01 1
TER-00-00021 TERMINAL GOLD PLATED 8P WT-9519 TER02 1
JUP-00-00005 JUMPER METAL JUMPER 55m/m BJ01,02,03,07 4
JUP-00-00003 JUMPER METAL JUMPER 35m/m BJ04,06,09 3
JUP-00-00001 JUMPER METAL JUMPER 20m/m BJ08 1
HOD-00-00011 FUSE HOLDER WF-9604 Fh01 1
CON-00-00002 WAFER LWL0640-2P CLIP 1
CON-00-00033 WAFER LWL0640-3P 1ST POWER,2ND POWER 2
CON-00-00128 WAFER LAD1140-04PBK HI101,301 2
WIR-00-00208 WIRE ASS'Y 300m/m CHD1140-04PBK ACCESSORY 2
WIR-00-00015 WIRE
WIR-00-00018 WIRE
HED-00-00115
TUB-00-00008 TEFLON TUBE 0.7PHI 10m/m TH01,Q140,240,340,440 6
FUS-AT-00006 AUTO FUSE 30A SET2+ACCESSORY2 4
ICO-00-00113 I.C DUAL OP AMP "SOP-08" NJM2068M U102,103,104,105,302,303,304,305,306,307
RES-08-00239 RESISTOR
RES-08-00022 RESISTOR
RES-08-00088 RESISTOR
RES-08-00117 RESISTOR
RES-08-00225 RESISTOR
RES-08-00148 RESISTOR
RES-08-00201 RESISTOR
RES-08-00210 RESISTOR
RES-08-00132 RESISTOR
RES-08-00187 RESISTOR
RES-08-00141 RESISTOR
CEC-08-00023 CAPACITOR
CEC-08-00037 CAPACITOR
CEC-08-00042 CAPACITOR
CEC-08-00040 CAPACITOR
MYC-00-00157 CAPACITOR MYLAR 5% 63V "TL"
MYC-00-00083 CAPACITOR MYLAR 5% 63V "TL"
ELC-00-00241
SWI-00-00033 SWITCH
VOL-00-00349 VOLUME
VOL-00-00351 VOLUME
HED-00-00249 PIN CONNECTOR
ICO-00-00095
HEADER PIN SOCKET
CAPACITOR ELECTROLYTIC"SRE"
I.C COMPARATOR DIP-8P KIA393P U90 1
AWG #22 BK 3.2PHI RING LUG
AWG #22 BK 3.2PHI RING LUG
TM2501-DG-14P 14P CON101-1,301-1 2
SMD 0805 1/10WF 9.31K OHM R257,457
SMD 0805 1/10WF 15K OHM R155,255,355,455
SMD 0805 1/10WF 47K OHM R256,456
SMD 0805 1/10WF 91K OHM R156,356
SMD 0805 1/10WJ 820 OHM R108,208,308,408
SMD 0805 1/10WJ 1K OHM R391,392,491,492
SMD 0805 1/10WJ 5.6K OHM R113,115,213,215,313,315,413,415
SMD 0805 1/10WJ 6.8K OHM R396,496
SMD 0805 1/10WJ 10K OHM R110,111,112,114,210,211,212,214,310,311
SMD 0805 1/10WJ 39K OHM R393,493
SMD 0805 1/10WJ 150K OHM R397,497
SMD 0805 22pF C156,356
SMD 0805 39pF C256,456
SMD 0805 47pF C111,211,311,393,411,493
SMD 0805 473pF C195,196,295,296,395,396,495,496
SLIDE SWITCH JSS2319 SW101,301
V9M(7x5) G3(PH2R)N 15S
V9M(7x5) G(4R)(PH2R)N 15S
TM2008-D76G-14P 14P CON101,301
60m/m W2 1
120m/m W1 1
823J C113,115,213,215,313,315,413,415
104J C391,392,491,492
10/16V C125,155,225,255,325,355,425,455 8
3B20KBx2 VR101,301,303
15C50KCx4 VR102,302
T01 , 4(0.7x15):11(0.7x4):8(0.7x1):8(0.7x1)
R312,314,410,411,412,414
1
10
2
4
2
2
4
4
8
2
16
2
2
2
2
6
8
8
4
2
3
2
2
RES-00-00437
RES-00-00402
RES-00-00550
RES-00-00556
RES-00-00573
RES-00-00635
RES-00-00029
CEC-00-00005
CEC-00-00006
DIO-00-00321
CON-00-00139
CON-00-00140
WIR-AS-00220
WIR-AS-00218
WIR-AS-00219
RESISTOR METAL FILM 1/5WF 1K OHM R97
RESISTOR METAL FILM 1/5WF 10K OHM R95
RESISTOR METAL FILM 1/5WF 51K OHM R96
RESISTOR METAL FILM 1/5WF 56K OHM R94
RESISTOR METAL FILM 1/5WF 68K OHM R93
RESISTOR CARBON FILM 1/5WJ 1M OHM R98
RESISTOR METAL FILM 1/2WJ 1K OHM R192,292
CAPACITOR CERAMIC TUBULAR 50V 103P C91,92,93
CAPACITOR CERAMIC TUBULAR 50V 104P C90
LED BLUE 3PHI MS-L330CBHSK LED1,2,3 3
WAFER LAL0640-2P CLIP 1
WAFER LAL0640-3P 1ST POWER,2ND POWER 2
WIRE ASS'Y BK,RED CHL0640-2P(300m/m) CLIP 1
WIRE ASS'Y BK,RED,GREEN CHL0640-3P(300m/m) 1ST POWER 1
WIRE ASS'Y BK,YELLOW,GREEN CHL0640-3P(300m/m) 2ND POWER 1
1
1
1
1
1
1
2
3
1
Page 19
Reference 7541a Electrical Parts List Addendum
The following chart below represents the only electrical parts
differences in 7540a and 7541a models:
MODEL PART NAME PART NUMBER SPEC DESIGNATOR
REF 7540a RESISTOR RES-00-00586 1/5WF 820 OHM R172,272,372,472
1
REF 7541a RESISTOR RES-00-00437 1/5WF 1K OHM R172,272,372,472
REF 7540a RESISTOR RES-00-00417 1/5WF 13.7K OHM R171,271,371,471
2
REF 7541a RESISTOR RES-00-00508 1/5WF 33K OHM R171,271,371,471
REF 7540a RESISTOR RES-08-00225 SMD 0805 1/10WJ 820 OHM R108,208,308,408
3
REF 7541a RESISTOR RES-08-00242 SMD 0805 1/10WF 240 OHM R108,208,308,408
4
5
REF 7540a
REF 7541a
REF 7540a
REF 7541a
POWER TERMINAL
POWER TERMINAL
SPEAKER TERMINAL
SPEAKER TERMINAL
TER-00-00030 (3P) TM006-01 TER01
TER-00-00278 (3P) DK-03B04-AG-5-UP TER01
TER-00-00021 (8P) WT-9519 TER02
TER-00-00274 (8P) DK-0801-AG-5-UP TER02
Reference 7540a/7541a
18
Page 20
Reference 7540a/7541a
19
Page 21
20
Reference 7540a/7541a
Page 22
Reference 7540a/7541a
21
Page 23
B+SW
22
A
B
C
D
6.16V
R12
3.9K
R11
4.7K
100/16V
47/16V
5.05V
A1266GR
C11
C14
Q11
R14
10K
R13
10K
C12
100/16V
C60
104P
R15
10
Q12
A1266GR
R16
820
4.44V
0V
TH01
50KTH
R62
4.7KF
16 15 14 13 12 11 10 9
R21
24K
R25
68K
D11
1SS133
10.5KF
R90
47K
R91
22K
REM
R60
U01
TL494CN
C21
102(M)
5.06V
0V
1N4004
R22
24K
Q90
C3198GR
D02
87654321
R63
430K
R04
56K
C13
100/16V
11.34V
R92
1K
13.54V
R41
1SS133
R51
R05
8.2K
D04
1SS133
220/0.5W
D03
220/0.5W
PRT-LED
C800
10/16V
0.68V
Q23
A1266GR
Q33
A1266GR
Q01
A1023Y
R02
4.7K
Q02
C3198GR
R42
1K
R52
1K
13.61V13.54V
R03
10/0.5W
R01
4.7K
R46
47
R45
47
R44
47
R43
47
R53
47
R54
47
R55
47
R56
47
12.89V
FQP50N06
FQP50N06
Q43
Q53
Q44
FQP50N06
Q54
FQP50N06
Q45
FQP50N06
Q55
FQP50N06
Q46
FQP50N06
Q56
FQP50N06
C03
104P
C06
2200/25"WL"
2200/25"WL"
C05
2200/25"WL"
C04
L03
CL-310
D01
1N5404
T01
(0.7x15):(0.7x4):(0.7x1):(0.7x1)
YG225D2
R30
100/2W
C08
222(M)
YG225D2
44PHI=4T:11T:8T:8T
14.4V
D41
D42
FH01
WF9604
30Ax2
CL-510
470/50V"SMS"
CL-510
D53
FR154
D54
FR154
D51
FR154
D52
FR154
L01
C51
C61
470/50V"SMS"
L02
C01
105(M)"TL"
C52
4700/50V"HC/DL"
C62
4700/50V"HC/DL"
C53
473P
C63
473P
B+
C57
4.7/50V
C67
4.7/50V
14.4V
28V
VCC2
-28V
VEE2
38.86V
VCC
VEE
-38.86V
E
Q21
C3198BL
C22
104P
0V
R31
1K
R32
22K
C15
10/25V
33K
R33
Q22
A1268GR
R34
15K
38.86V
38.86V
C16
47/25V
R35
15K
PROT
C33
473P
R61
10K
W1
CASE GND CASE GND
120m/m
C32
C31
473P
105(M)"TL"
W2
60m/m
105(M)"TL"
C34
71 2 3 4 5 6 8
Page 24
A
23
B
C
D
E
RCA101-C
DJB-554A
LOW INPUT R-CH
RCA101-A
DJB-554A
HI101
LAD1140-04PBK
+
R122
-
HI-INPUT
R222
+
LOW INPUT L-CH
RCA101-B
DJB-554A
RCA101-D
DJB-554A
R-OUT
C101
102P
22/16V"SRE"
10K
22/16V"SRE"
22/16V"SRE"
10K
22/16V"SRE"
C201
102P
L-OUT
C128
4.7/50V"SRE"
R129
100K
C102
22/16V"SRE"
R101
22KF
C103
22/16V"SRE"
C123
C124
C224
C223
C202
22/16V"SRE"
R201
22KF
C203
22/16V"SREz"
C228
4.7/50V"SRE"
R229
100K
R123
270K
R124
270K
R224
270K
R223
270K
R128
R102
47KF
C104
10P
R103
47KF
R202
47KF
C204
10P
R203
47KF
R228
1K
1K
1
U111-A
NJM2068LD
R106
47KF
R206
47KF
7
U111-B
NJM2068LD
6
5
C126
22P
R126
10KF
2
3
-
+
C226
22P
R226
10KF
2
-
+
3
C105
22P
R105
47KF
-
+
U101-A
NJM2068LD
C106
22P
C205
22P
R205
47KF
U101-B
NJM2068LD
C206
22P
6
-
+
5
R165
R265
7
C191
C125
C225
C200
104P
C210
104P
C192
330/16V
R120
5.6KF
330/16V
R220
5.6KF
C292
220/16V
C120
2.2\50V
R121
22KF
C291
220/16V
C220
2.2\50V
R221
22KF
+15V
2.2/50V
C141
2.2/50V
C231
2.2/50V
C241
2.2/50V
D191
1N4744(15V)
C131
C121
68P
D291
1N4744(15V)
C221
68P
-15V
+15V
R242
5.6K
150/2W
5.6K
R142
5.6K
R141
1K
R291
150/2W
R232
5.6K
R241
1K
R191
R131
1K
R132
R231
1K
-37.74V
-37.74V
28V
VCC2
R135
1K
Q131
C3198GR
R133
22
-0.61V
0.57V
R143
22
Q141
A1266GR
A1266GR
R145
1K
-28V-15V
VEE2
100/16V
R235
1K
Q231
C3198GR
R233
R234
22
-0.61V
0.57V
R24322R244
Q241
A1266GR
A1266GR
R245
1K
100/16V
R134
22
R144
22
Q142
R172
820F
C171
Q232
C3198GR
22
22
Q242
R272
820F
C271
37.78V
Q132
C3198GR
37.78V
R136
47
C132
100P
C140
473(M)
C142
100P
R171
13.7KF
C232
100P
C240
473(M)
C242
100P
R271
13.7KF
-0.28V
-0.28V
Q133
A1266GR
R137
3.9K
R147
2.7K
Q143
C3198GR
R146
47
R236
47
Q233
A1266GR
R237
3.9K
R247
2.7K
Q243
C3198GR
R246
47
0.89V
-0.94V
0.89V
-0.94V
Q140
C3200GR
-0.41V
Q240
C3200GR
0.38V
0.38V
Q134
C1027Y
R150
120
Q144
A1023Y
Q234
C1027Y
R250
120
-041V
Q244
A1023Y
Q135
TIP35C
R160
0.1/3W
R170
0.1/3W
Q145
TIP36C
Q235
TIP35C
R260
0.1/3W
R270
0.1/3W
Q245
TIP36C
R151
1.5K
R251
1.5K
R152
10K
D151
1SS133
0V
1SS133
0V
R252
10K
D251
Q151
C3200GR
C151
100P
Q251
C3200GR
C251
100P
56K
R181
56K
R281
38.86V
VCC
0V
A
Q181
C3198GR
C181
100/16V
-38.85V
VEE
38.86V
VCC
-38.86V
VEE
38.78V
PROT
D169
R169
200K
1SS133
CLIP
0V
Q281
C3198GR
TER02-A
D269
1SS133
R162
680/2W
R262
680/2W
F/ROUT
WT-9519
F/LOUT
CLIP
C161
104(M)
C261
104(M)
R161
4.7/0.5W
R261
4.7/0.5W
R269
200K
R125
10KF
R127
1K
1
1K
1K
R227
1K
R225
10KF
R107
3
+
-
2
6
-
+
5
1K
U110-A
NJM2068LD
U110-B
NJM2068LD
R207
1K
FRONT-R
REAR-R
1
7
VR101-A
20KB
R166
1K
R266
1K
VR101-B
20KB
FRONT-L
REAR-L
C155
10/16V"SRE"
R108
820
FRONT-R
FRONT-L
C255
10/16V"SRE"
R208
820
R255
15KF
R155
15KF
R257
9.31KF
R156
6
5
NJM2068M
SW102
JSS2219
MONO
STEREO
3
2
R256 47KF
C156
22P
4
U102-B
U102-A
8
NJM2068M
C256
39P
91KF
-15V
+15V
C400
104P
R112
10K
C111
47P
R111
10K
R110
10K
7
U103-B
NJM2068M
6
-
+
5
VR102A
7
50KC
R114
10K
32-320Hz VARIABLE X-OVER
R212
10K
C211
47P
R211
10K
U103-A
R210
10K
1
NJM2068M
2
-
+
3
VR102B
1
50KC
R214
10K
R113
5.6K
R213
5.6K
823M"TL"
6
-
+
5
823M"TL"
2
-
+
3
C113
U104-B
NJM2068M
C213
7
U104-A
NJM2068M
1
VR102C
VR102D
50KC
50KC
R115
5.6K
R215
5.6K
+15V
C195
473P
C295
473P
-15V
823M"TL"
6
-
+
5
823M"TL"
2
-
+
3
C115
NJM2068M
C196
473P
C296
473P
C215
U105-A
U105-B
7
NJM2068M
1
LPF
HPF
FLAT
LPF
HPF
FLAT
SW101-A
JSS2319
SW101-B
JSS2319
10/16V"SRE"
C410
104P
10/16V"SRE"
1
2
3
4
5
6
7
8
Page 25
A
24
B
C
D
LOW INPUT R-CH
RCA301-A
DJB-562D
HI301
LAD1140-04PBK
+
R322
10K
-
HI-INPUT
R422
10K
+
LOW INPUT L-CH
RCA301-B
DJB-562D
C301
102P
22/16V"SRE"
22/16V"SRE"
22/16V"SRE"
22/16V"SRE"
C401
102P
22/16V"SRE"
22/16V"SRE"
C323
C324
C424
C423
22/16V"SRE"
22/16V"SRE"
C302
R301
22KF
C303
C402
R401
22KF
C403
R323
270K
R324
270K
R424
270K
R423
270K
R302
47KF
C304
10P
R303
47KF
R402
47KF
C404
10P
R403
47KF
R406
47KF
R306
47KF
6
5
2
-
+
3
C405
R405
47KF
-
+
C406
C305
22P
R305
47KF
U301-A
NJM2068LD
C306
22P
R365
R465
22P
7
U301-B
NJM2068LD
22P
+15V
+15V
C331
C320
2.2\50V
R321
22KF
C420
2.2\50V
R421
22KF
C341
2.2/50V
2.2/50V
C441
2.2/50V
2.2/50V
C431
R312
10K
C311
C356
R457
9.31KF
6
5
NJM2068M
SW302
JSS2219
MONO
STEREO
3
2
22P
R356
91KF
4
U302-B
-15V
U302-A
8
NJM2068M
R456 47KF
C456
39P
7
1
R307
1K
1
VR301-A
20KB
1K
U310-A
NJM2068LD
R366
U310-B
NJM2068LD
R407
1K
1
7
R466
VR301-B
20KB
1K
1K
3
+
-
2
6
-
+
5
1K
C355
10/16V"SRE"
R308
820
REAR-R
REAR-L
C455
10/16V"SRE"
R408
820
R455
15KF
R355
15KF
47P
R311
10K
R310
10K
U303-B
NJM2068M
6
-
+
7
5
VR302A
50KC
R314
10K
R313
5.6K
32-320Hz VARIABLE X-OVER
R412
10K
C411
47P
R411
10K
R410
10K
U303-A
NJM2068M
2
-
+
1
3
VR302B
50KC
R414
10K
R413
5.6K
823M"TL"
6
-
+
5
823M"RL"
2
-
+
3
C313
C413
U304-B
NJM2068M
7
U304-A
NJM2068M
1
VR302C
VR302D
50KC
50KC
R315
5.6K
R415
5.6K
+15V
C395
473P
C495
473P
-15V
823M"TL"
6
-
+
5
823M"TL"
2
-
+
3
C315
C415
C396
473P
C496
473P
U305-B
NJM2068M
7
U305-A
NJM2068M
1
SW301-B
JSS2319
LPF
R391
HPF
FLAT
1K
R392
1K
104(M)"TL"
104(M)"TL"
C391
C392
R397
150K
VR303-A
20KB
3
+
-
2
R396
6.8K
5
+
-
6
50Hz 0~12dB BASSBOOST
SW301-A
JSS2319
LPF
R491
1K
FLAT
HPF
R492
1K
C491
104(M)"TL"
C492
104(M)"TL"
R497
150K
VR303-B
20KB
3
+
-
2
R493
R496
6.8K
5
+
-
6
NJM2068M
R393
39K
C393
47P
U306-B
NJM2068M
U307-A
NJM2068M
39K
C493
47P
U307-B
NJM2068M
U306-A
1
7
1
7
C325
10/16V"SRE"
C425
10/16V"SRE"
R320
5.6KF
R420
5.6KF
C321
68P
C421
68P
-15V
-15V
R342
+15V
R442
5.6K
5.6K
1K
R341
1K
R441
R331
R332
R431
1K
5.6K
1K
R432
5.6K
R335
Q331
C3198GR
R333
R343
Q341
A1266GR
R345
-37.74V
R435
C3198GR
R433
R44322R444
Q441
A1266GR
R445
-37.74V
1K
1K
22
22
1K
Q431
1K
22
-0.61V
0.57V
-0.61V
0.57V
R334
22
R344
22
A1266GR
R372
820F
C371
100/16V
C3198GR
R434
22
22
Q442
A1266GR
R472
820F
C471
100/16V
Q342
Q432
37.78V
Q332
C3198GR
37.78V
R336
47
C332
100P
-0.28V
C340
473(M)
C342
100P
R371
13.7KF
C432
100P
-0.28V
C440
473(M)
C442
100P
R471
13.7KF
Q333
A1266GR
R337
3.9K
R347
2.7K
Q343
C3198GR
R346
47
R436
47
Q433
A1266GR
R437
3.9K
R447
2.7K
Q443
C3198GR
R446
47
0.89V
-0.94V
0.89V
-0.94V
0.38V
R350
120
Q340
C3200GR
-0.41V
0.38V
R450
Q440
C3200GR
-0.41V
Q334
C1027Y
Q335
0V
TIP35C
R351
1.5K
R360
0.1/3W
R370
0.1/3W
Q345
TIP36C
Q344
A1023Y
Q434
C1027Y
Q435
TIP35C
R451
1.5K
R460
120
0.1/3W
R470
0.1/3W
Q445
TIP36C
Q444
A1023Y
R352
10K
D351
1SS133
0V
1SS133
R452
10K
D451
Q351
C3200GR
C351
100P
R381
56K
R481
56K
Q451
C3200GR
C451
100P
38.86V
VCC
37.78V
PROT
R369
200K
-38.86V
VEE R361
A
37.78V
VCC
-38.86V
VEE
C361
104(M)
C461
104(M)
R469
200K
4.7/0.5W
D369
1SS133
R461
4.7/0.5W
D469
1SS133
CLIP
R362
680/2W
R462
680/2W
CLIP
TER02-B
R/ROUT
WT-9519
R/LOUT
E
71 2 3 4 5 6 8
Page 26
Power Amplifier Reference 7541a
25
REF 7541a SCHEMATIC PAGE 1
10.5KF
R62
C60
4.7KF
104P
C14
47/16V
R11
4.7K
R12
3.9K
C11
100/16V
Q11
A1266GR
R13
R15
10K
10
Q12
A1266GR
R14
C12
10K
100/16V
16 15 14 13 1211 10 9
TH01
R21
R90
50KTH
24K
47K
R25
68K
D11
R16
1SS133
820
R91
22K
REM
R60
TL494CN
102(M)
B+SW
Q01
A1023Y
R03
C800
10/16V
A1266GR
A1266GR
10/0.5W
R02
R01
4.7K
4.7K
Q02
C3198GR
R46
47
R45
47
R44
47
Q43
R43
FQP50N06
47
R42
Q23
1K
Q53
R53
FQP50N06
47
R54
R52
47
1K
Q33
R55
47
R56
47
Q44
FQP50N06
Q54
FQP50N06
Q45
FQP50N06
Q55
FQP50N06
Q46
FQP50N06
Q56
FQP50N06
C03
104P
C06
2200/25"WL"
R63
430K
D02
R04
1N4004
56K
R05
8.2K
D04
1SS133
U01
24K
C21
Q90
C3198GR
R41
220/0.5W
D03
87654321
1SS133
R22
R51
C13
220/0.5W
100/16V
R92
1K
PRT-LED
2200/25"WL"
C04
2200/25"WL"
C05
L03
CL-310
T01
44PHI=4T:11T:8T:8T
(0.7x15):(0.7x4):(0.7x1):(0.7x1)
100/2W
C08
222(M)
D01
1N5404
YG225D2
R30
YG225D2
FH01
WF9604
30Ax2
C01
105(M)"TL"
D53
FR154
D54
FR154
D51
FR154
D52
FR154
D41
L01
CL-510
C51
4700/50V"HC/DL"
470/50V"SMS"
C61
4700/50V"HC/DL"
470/50V"SMS"
D42
L02
CL-510
B+
12V
VCC2
C57
4.7/50V
C67
4.7/50V
C53
473P
C52
C62
C63
473P
VEE2
VCC
VEE
Q21
C3198BL
R32
C15
10/25V
Q22
A1268GR
22K
R33
33K
C16
R34
47/25V
15K
R35
PROT
15K
C33
473P
R61
10K
W1
CASE GND CASE GND
120m/m
C32
C31
473P
105(M)"TL"
W2
60m/m
C34
105(M)"TL"
R31
1K
C22
104P
Page 27
LOW INPUT L-CH
26
RCA101-C
DJB-554A
LOW INPUT R-CH
RCA101-A
DJB-554A
10/16"SRE"
HI101
LAD1140-04PBK
+
R122
HI-INPUT
-
R222
+
RCA101-B
DJB-554A
10/16"SRE"
RCA101-D
DJB-554A
2
C101
10K
10K
2
C201
R-OUT
4.7/50V"SRE"
22/16V"SRE"
22/16V"SRE"
C123
22/16V"SRE"
C124
22/16V"SRE"
C224
22/16V"SRE"
C223
22/16V"SRE"
22/16V"SRE"
22/16V"SREz"
L-OUT
4.7/50V"SRE"
Power Amplifier Reference 7541a
C126
22P
R126
R125
10KF
10KF
C128
R128
1K
R129
100K
C102
R102
47KF
C104
R101
10P
22KF
R103
C103
47KF
R123
270K
R124
270K
R224
270K
R223
270K
R202
C202
47KF
C204
R201
10P
22KF
R203
C203
47KF
C228
R228
1K
R229
100K
U111-A
NJM2068LD
R106
47KF
R206
47KF
U111-B
NJM2068LD
2
-
1
+
3
C105
22P
R105
47KF
2
+
3
U101-A
NJM2068LD
C106
22P
C205
22P
R205
47KF
6
+
5
U101-B
NJM2068LD
C206
22P
C226
22P
R226
10KF
6
-
7
+
5
FRONT-R
REAR-R
R127
1K
R107
1K
1
R165
1K
R265
1K
7
R227
1K
VR101-A
20KB
U110-A
NJM2068LD
R166
3
1K
+
-
1
2
R266
6
1K
-
+
7
5
U110-B
NJM2068LD
R207
1K
VR101-B
R225
10KF
FRONT-L
REAR-L
REF 7541a SCHEMATIC PAGE 2
+15V
R112
10K
C111
C156
22P
R156
91KF
1
C155
R155
9.1KF
10/16V"SRE"
1
R108
240F
FRONT-R
FRONT-L
10/16V"SRE"
20KB
1
R208
240F
6
5
4
U102-B
NJM2068M
-15V
SW102
JSS2219
MONO
STEREO
C255
R255
9.1KF
U102-A
8
NJM2068M
3
2
1
R256 47KF
1
R257
C256
5.1K
39P
47P
R111
10K
U103-B
R110
NJM2068M
VR102A
6
-
10K
7
+
7
5
32-320Hz VARIABLE X-OVER
C211
47P
R211
10K
U103-A
NJM2068M
R210
10K
1
VR102B
2
-
+
1
3
823M"TL"
R113
5.6K
6
+
50KC
5
R114
10K
R212
10K
823M"TL"
R213
5.6K
2
-
+
50KC
3
R214
10K
C113
NJM2068M
C213
U104-B
7
U104-A
NJM2068M
1
VR102D
VR102C
C191
C192
+15V
220/16V
330/16V
C400
C200
104P
104P
C115
823M"TL"
U105-B
R115
5.6K
6
-
+
50KC
5
+15V
C195
C196
473P
473P
C296
C295
473P
473P
-15V
C215
823M"TL"
R215
5.6K
2
+
50KC
3
NJM2068M
7
U105-A
NJM2068M
1
SW101-A
JSS2319
LPF
HPF
FLAT
SW101-B
JSS2319
LPF
HPF
FLAT
C125
10/16V"SRE"
C410
104P
C225
10/16V"SRE"
R120
C120
5.6KF
2.2\50V
R121
22KF
C141
2.2/50V
-15V
C210
C291
C292
220/16V
330/16V
104P
2.2/50V
C220
R220
2.2\50V
5.6KF
R221
22KF
2.2/50V
2.2/50V
C231
C241
D191
1N4744(15V)
C131
C121
68P
D291
1N4744(15V)
C221
68P
-15V
5.6K
+15V
R242
5.6K
R142
R141
1K
150/2W
R241
1K
R191
150/2W
R131
1K
R132
5.6K
R291
R231
1K
R232
5.6K
VCC2
R135
1K
Q131
C3198GR
R133
22
R143
22
Q141
A1266GR
R145
1K
VEE2
R235
1K
Q231
C3198GR
R233
22
R24322R244
Q241
A1266GR
R245
1K
R134
22
A1266GR
100/16V
R234
22
A1266GR
R272
C271
100/16V
R144
22
Q142
R172
2KF
C171
Q232
C3198GR
22
Q242
1
1KF
Q132
C3198GR
1
R136
47
Q133
A1266GR
C132
100P
R137
3.9K
C140
473(M)
R147
2.7K
C142
100P
Q143
C3198GR
R146
47
1
R171
33KF
R236
47
Q233
A1266GR
C232
100P
R237
3.9K
C240
473(M)
R247
2.7K
C242
100P
Q243
C3198GR
R246
47
R271
1
33KF
Q140
C3200GR
Q240
C3200GR
Q134
C1027Y
R150
120
A1023Y
Q234
R250
120
A1023Y
Q144
C1027Y
Q244
R160
0.1/3W
R170
0.1/3W
Q145
TIP36C
R260
0.1/3W
R270
0.1/3W
Q135
TIP35C
Q235
TIP35C
Q245
TIP36C
VCC
Q281
C3198GR
104(M)
104(M)
PROT
D169
R169
200K
1SS133
CLIP
TER02-A
1
F/ROUT
R161
R162
4.7/0.5W
C161
C261
4.7/0.5W
R269
200K
DK0801-AG-5-UP
680/2W
R262
680/2W
R261
F/LOUT
D269
1SS133
CLIP
Q151
R152
R151
C3200GR
10K
1.5K
C151
D151
100P
1SS133
A
Q181
R181
C3198GR
56K
R281
C181
56K
100/16V
VEE
VCC
Q251
R252
10K
D251
1SS133
C3200GR
C251
100P
VEE
R251
1.5K
Page 28
LOW INPUT R-CH
27
LAD1140-04PBK
+
-
-
+
LOW INPUT L-CH
RCA301-B
DJB-562D
RCA301-A
DJB-562D
HI301
HI-INPUT
2
C301
10/16"SRE"
R322
10K
R422
10K
C401
10/16"SRE"
C323
22/16V"SRE"
C324
22/16V"SRE"
C424
22/16V"SRE"
C423
22/16V"SRE"
2
C302
22/16V"SRE"
R301
22KF
C303
22/16V"SRE"
C402
22/16V"SRE"
R401
22KF
C403
22/16V"SRE"
Power Amplifier Reference 7541a
+15V
C305
R302
47KF
C304
10P
R303
47KF
R323
270K
R324
270K
R424
270K
R423
270K
R402
47KF
C404
10P
R403
47KF
22P
R305
47KF
R307
2
1K
-
+
1
3
U301-A
NJM2068LD
C306
R306
22P
47KF
R365
1K
3
+
-
2
6
-
+
5
R465
1K
C405
22P
R405
47KF
6
-
+
7
5
U301-B
NJM2068LD
C406
R406
22P
47KF
U310-A
NJM2068LD
NJM2068LD
R407
1K
U310-B
1
7
VR301-A
20KB
VR301-B
10/16V"SRE"
1
R308
240F
R366
1K
R466
1K
20KB
R408
240F
C355
REAR-R
REAR-L
C455
10/16V"SRE"
1
R455
9.1KF
C356
22P
R356
1
91KF
R355
9.1KF
SW302
JSS2219
MONO
STEREO
6
5
U302-B
NJM2068M
-15V
R310
6
-
10K
7
+
5
4
32-320Hz VARIABLE X-OVER
U302-A
R410
8
NJM2068M
2
3
2
1
R456 47KF
1
R457
C456
5.1K
39P
-
10K
1
+
3
R312
C311
47P
R311
10K
U303-B
NJM2068M
VR302A
7
50KC
R314
R412
C411
47P
R411
10K
U303-A
NJM2068M
VR302B
1
50KC
R414
REF 7541a SCHEMATIC PAGE 3
10K
C313
823M"TL"
U304-B
R313
NJM2068M
5.6K
10K
10K
R413
5.6K
10K
6
5
2
3
-
+
C413
823M"RL"
-
+
U304-A
NJM2068M
VR302C
7
VR302D
1
C315
823M"TL"
U305-B
R315
5.6K
6
+
50KC
5
+15V
C395
473P
C495
473P
-15V
C415
823M"TL"
R415
5.6K
2
-
+
50KC
3
SW301-B
NJM2068M
JSS2319
LPF
HPF
7
FLAT
C396
50Hz 0~12dB BASSBOOST
473P
C496
473P
U305-A
SW301-A
NJM2068M
JSS2319
LPF
1
HPF
FLAT
R391
1K
R392
R491
1K
R492
1K
1K
C391
104(M)"TL"
C392
104(M)"TL"
R397
150K
C491
104(M)"TL"
C492
104(M)"TL"
R497
150K
VR303-A
20KB
VR303-B
20KB
U306-A
NJM2068M
3
+
-
1
2
R393
39K
C393
47P
R396
6.8K
U306-B
NJM2068M
5
+
-
7
6
U307-A
NJM2068M
3
+
-
1
2
R493
39K
C493
47P
R496
6.8K
U307-B
NJM2068M
5
+
-
7
6
C325
10/16V"SRE"
C425
10/16V"SRE"
5.6KF
R420
5.6KF
R320
C320
2.2\50V
R321
22KF
C420
2.2\50V
R421
22KF
2.2/50V
C441
2.2/50V
2.2/50V
C341
2.2/50V
+15V
R331
R335
1K
1K
R332
C331
5.6K
Q331
C3198GR
R333
22
C321
68P
C431
C421
68P
R343
22
Q341
A1266GR
R342
R345
5.6K
1K
R341
1K
-15V
+15V
R431
1K
R435
1K
R432
5.6K
Q431
C3198GR
R433
22
R44322R444
Q441
A1266GR
R442
5.6K
R445
R441
1K
1K
-15V
R334
R344
A1266GR
C371
100/16V
R434
A1266GR
R472
C471
100/16V
22
22
R372
1KF
22
22
Q442
1
1KF
Q342
1
Q432
C3198GR
Q332
C3198GR
R336
47
C332
100P
C340
473(M)
C342
100P
R371
1
33KF
C432
100P
C440
473(M)
C442
100P
R471
1
33KF
A1266GR
R337
3.9K
R347
2.7K
C3198GR
R346
47
R436
A1266GR
R437
3.9K
R447
2.7K
Q333
Q343
47
Q433
Q443
C3198GR
R446
47
Q340
C3200GR
Q440
C3200GR
VCC
Q334
C1027Y
Q335
TIP35C
Q351
C3200GR
R352
R351
10K
1.5K
Q345
Q435
TIP35C
C351
D351
100P
1SS133
R381
56K
R481
56K
Q451
C3200GR
R451
R452
1.5K
10K
D451
C451
1SS133
100P
R360
R350
120
0.1/3W
R370
0.1/3W
TIP36C
Q344
A1023Y
Q434
C1027Y
R450
R460
120
0.1/3W
R470
0.1/3W
Q445
TIP36C
Q444
A1023Y
PROT
R369
200K
VEE R361
4.7/0.5W
C361
104(M)
A
C461
104(M)
4.7/0.5W
VCC
R469
200K
VEE
D369
1SS133
R461
D469
1SS133
CLIP
DK-0801-AG-5-UP
R362
680/2W
R462
680/2W
CLIP
TER02-B
R/ROUT
R/LOUT
1
Page 29
MAN-01-0197A
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