ELECTRICAL PARTS LIST ..……….……….…….….…13
VERSION II ELECTRICAL PARTS LIST ADDENDUM….……….16
IC/TRANSISTOR PINOUTS..……..….…….….….….…..17
GTO 301.1 SCHEMATICS………..…………..…..……...20
GTO 301.1II SCHEMATICS………...……….…………...22
PACKING……..……………………………......................24
GTO 301.1/ GTO 301.1II Specifications
Output Power: 204W RMS x 1 channels @ 4 ohms; ≤1% THD + N
(14.4V supply) 294W RMS x 1 channels @ 2 ohms; ≤1% THD + N
Signal-to-noise ratio: 77dBA (reference 1W into 4 ohms)
Dynamic power: 320W @ 2 ohms
Effective damping factor: 6.39 @ 4 ohms
Frequency response: 10Hz – 302Hz (–3dB)
Maximum input signal: 4.7V
Maximum sensitivity: GTO 301.1 - 220mV
GTO 301.1II - 75mV
DC Offset <50mV (-50%)
Output regulation: .098dB @ 4 ohms
Idle Current 0.90A
Input Impedance 22kΩ
Max Current Draw 22A @ 4 ohms
39A @ 2 ohms
Dimensions: 11 5/8 x 12 5/16 x 2 3/8” (L x W x D)
(295mm x 313mm x 60mm)
Fuses: 30A
JBL 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
GTO 301.1/301.1II
2
Page 4
INSTALLATION
3
GTO 301.1/301.1II
WARNING: Playing loud music in an
automobile can hinder your ability to hear
traffic and permanently damage your
hearing. We recommend listening at low or
moderate levels while driving your car. JBL
accepts no liability for hearing loss, bodily
injury or property damage resulting from
the use or misuse of this product.
IMPORTANT: To get the best
performance from your JBL Grand Touring
Series amplifiers, we strongly recommend
that installation be entrusted to a qualified
professional. Although these instructions
explain how to install GTO amplifiers in a
general sense, they do not show specific
installation methods that may be required
for your particular vehicle. If you do not
have the necessary tools or experience,
do not attempt the installation yourself.
Instead, please ask your authorized JBL
car audio dealer about professional
installation.
INSTALLATION
WARNINGS AND TIPS
• Always wear protective eyewear when
using tools.
•Turn off the audio system and other
electrical devices before you start.
Disconnect the (–) negative lead from
your vehicle’s battery.
• Check clearances on both sides of
a planned mounting surface before
drilling any holes or installing any
screws. Remember that the screws
can extend behind the surface.
• At the installation sites, locate and
make a note of all fuel lines, hydraulic
brake lines, vacuum lines and electrical
wiring. Use extreme caution when cutting or drilling in and around these areas.
• Before drilling or cutting holes, use a
utility knife to remove unwanted fabric
or vinyl to keep material from snagging
in a drill bit.
• When routing cables, keep input-signal
cables away from power cables and
speaker wires.
•When making connections, make
certain they are secure and properly
®
insulated.
• If the amplifier’s fuse must be replaced,
use only the same type and rating as
that of the original. Do not substitute
another kind.
CHOOSING A LOCATION
AND MOUNTING THE
AMPLIFIER
Choose a mounting location in the trunk
or cargo area where the amplifier will not
be damaged by shifting cargo. Amplifier
cooling is essential for proper amplifier
operation. If the amplifier is to be installed
in an enclosed space, make sure there is
sufficient air circulation for the amplifier
to cool itself.
When mounting the amplifier under a
seat, ensure that it is clear of all moving
seat parts and does not affect the seat
adjustments. Mount the amplifier so it
is not damaged by the feet of backseat
passengers. Make sure that the amplifier
is mounted securely using nuts and bolts
or the supplied mounting screws.
Mount the amplifier so that it remains
dry – never mount an amplifier outside
the vehicle or in the engine compartment.
Figure 1. Terminal connection end plate.
POWER CONNECTIONS
The GTO amplifiers are capable of
delivering extremely high power levels,
and require a heavy-duty and 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. Scrape
away any paint from this location; use a startype 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.
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
Failure to adequately protect the
metal.
positive wire from potential damage may
result in a vehicle fire.
routing and connecting this wire, you may
install the fuse at the battery.
Remote Connection
Connect the amplifier’s Remote (REM)
terminal to the source unit’s Remote TurnOn lead using a minimum of 18-gauge wire.
NOTE: When using the speaker level
inputs, connect the remote (REM) terminal
to the source unit. If your source unit does
not have a remote turn-on connection,
connect the amplifier’s (REM) terminal to
the vehicle’s accessory circuit.
Do not install the fuse at
When you are done
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 high-level inputs,
the AUX outputs can be used to pass a
line-level signal to another amplifier.
These recommendations assume 7' – 10'
wire runs. If your installation differs markedly, you will need to adjust the wire
gauge accordingly.
IMPORTANT NOTE: If you are planning
to use optional neon tubes, install them
before making any electrical connections
to the amplifier (refer to“Installing Neon
Tubes” on page 5).
Page 5
CONNECTIONS – GTO301.1/GTO301.1II
GTO Amplifier
(partial end panel)
Subwoofer
–
+
GTO Amplifier
(partial end panel)
SubwooferSubwoofer
+
–
–
+
4
The GTO subwoofer amplifiers are
single-channel amplifiers. There are
two sets of terminals to make it easy
to connect multiple woofers. Either
set of (+/–) terminals may be used
when connecting woofers.
To the right are two application
diagrams to help plan your subwoofer
system installation.
show how to configure the GTO
subwoofer amplifiers
Figures 2 and 3
GTO 301.1/301.1II
NOTE: For simplicity, Figures 2 and 3
do not show power, remote and input
connections.
NOTE: Minimum speaker load is
2 ohms.
Figure 2. GTO subwoofer amplifier with two woofer connections.
Figure 3. GTO subwoofer amplifier with one woofer connection.
Page 6
INSTALLATION AND SETUP
SETTING THE
CROSSOVER(S)
SETTING INPUT
SENSITIVITY
1. Initially turn the INPUT LEVEL control(s)
to minimum (counter clockwise).
2. Reconnect the (–) negative lead to the
vehicle’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.
NOTE: After the source unit is on, red 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 next page.
REMOTE LEVEL CONTROL
SETTING THE BASS BOOST
AUX OUTPUT
NOTE: When using the high-level inputs,
the AUX outputs can be used to pass a
line-level signal to another amplifier.
INSTALLING NEON TUBES
(OPTIONAL)
1. Using a Phillips screwdriver, remove all
screws on the amplifier’s output/power
end panel and set them aside.
2. Using a 3⁄ 32-inch Allen wrench, remove
only the screws on the amplifier’s (top)
clear cover and set them aside.
3. Remove the end panel and slide the
cover off. Set both parts aside.
4. Locate the enclosed hardware bag and
remove the four clips. Each clip has a
square end and a larger round end.
Using a round end, press two clips onto
each neon tube (e.g., Street Glow AN9
or equivalent), as shown in
Figure 13.
5. For each tube, align both clips so the
square ends slide onto an exposed
extrusion edge, as shown in Figure 9.
Do not cover any screw holes. When
installed correctly, each neon tube will
sit under an extrusion and not be visible
when viewed from directly above.
6. Route each neon tube’s power cable
through its respective NEON hole on the
end panel (see
Figure 13).
7. Slide the cover back into place and reinstall its screws. Then, replace the end
panel and reinstall its screws.
8. Finish the installation of the neon tubes
as instructed in their owner’s manual.
Figure 12.
5
GTO 301.1/301.1II
Determine your system plans and set the
crossover mode switch accordingly.
Initially set the crossover frequency
control midway. While listening to music,
adjust the 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.
All three GTO subwoofer
amplifiers have inputs for an optional
remote level control (RLC). This will allow
the amplifier’s input 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.
Under the dash or in the center console
are both suitable locations.
All three GTO subwoofer amplifiers
are all equipped with a bassboost control. This allows you to adjust the
bass output of your system at 50Hz up to
12dB and enhance low frequency.
All three GTO subwoofer amplifiers are
equipped with full-range outputs that can
be used to connect additional amplifiers.
Page 7
INSTALLATION AND SETUP
To Neon
Power
Supply
To Neon
Power
Supply
6
Figure 13. Installing neon tubes in a JBL GTO amplifier.
TROUBLESHOOTING
GTO 301.1/301.1II
SYMPTOMLIKELY CAUSESOLUTION
No audio No voltage at BATT+ Check voltages at
(POWER LEDor REM terminals, amplifier terminals
is off)or bad or no ground with VOM
connection
No audioDC voltage on Amplifier may need
(PROTECT LED amplifier output service; see enclosed
flashes every warranty card for
4 seconds) service information
No audio Amplifier isMake sure amplifier
(PROTECToverheatedcooling is not blocked
LED is on)at mounting location;
verify speaker system
impedance is within
specified limits (see
“Specifications” on
the next page)
No audioVoltage less than 9V on Check vehicle
(PROTECT BATT+ connectioncharging system for
and POWERdefective voltage
LEDs flash)regulator
SYMPTOMLIKELY CAUSESOLUTION
No audioVoltage more than 16VCheck vehicle
(PROTECT or less than 8.5V oncharging system for
LED is on)BATT+ connectiondefective voltage
Distorted audioInput sensitivity is Check INPUT
Distorted audioShort circuit in Remove speaker leads
and PROTECT speaker or wireone at a time to locate
LED flashes shorted speaker or
Music lacks Speakers are not Check speaker
“punch”connected properlyconnections for
regulator
not set properly, orLEVEL setting; or
amplifier or source check speaker wires
unit is defectivefor shorts or grounds
wire, then repair
proper polarity
Page 8
GTO 301.1/301.1II
7
Grand TouringGrand Touring
Page 9
GTO 301.1/301.1II Exploded View
8
GTO 301.1/301.1II
Page 10
Mechanical Parts List
9
GTO 301.1/301.1II
Page 11
GTO301.1/GTO301.1II BLOCK DIAGRAM
10
GTO 301.1/301.1II
Page 12
GTO 301.1/301.1II
11
TH01
FTD5-350
YG225D2
D41
YG225D2
D42
10m/m
Q198
C3198GR
Q199
C3198GR
C199
TIP36C
C3200GR
Q192
Q172
TIP36C
Q191
TIP36C
Q190
PAM629-01
REV.0
J57 10m/m
J58
10m/m
J60 10m/m
J59
10m/m
J56
100/16V
C3198GR
Q219
1/50V
C220
15K
R220
6m/m
J100
10K
R219
4.7/50V
C219
150K
R221
150
R222
104(M)
C197
55m/m
R199
0.1/3W
22m/m
22m/m
22m/m
0.1/3W
0.1/3W
22m/m
J39
J40
J41
680/2W
BJ03
20m/m
56K
15m/m
10
10
10
J101
MOD01
623PCB4-B
4.7/0.5W
19m/m
19m/m
19m/m
J69 15m/m
30K
R215
15K
R216
U105
R223
TER02
DST0014-00
20m/m
20m/m
20m/m
R198
R197
4.7/0.5W
CL-200C
L196
R196
J4225m/m
J43
25m/m
25m/m
J44
25m/m
J45
25m/m
J46
25m/m
J47
25m/m
J48
25m/m
J49
J50
J51
J52
J5325m/m
25m/m
J54
J55
J63
J66
J65
J68
15m/m
15m/m
20m/m
20m/m
R195
J94
R192
J95
J96
J97
R194
R191
R193
R190
NJM13600
X
C61
J61
J62
20m/m
20m/m
910F
R157
100/16V
C159
39KF
R158
C158
100/0.5W
R174
10/0.5W
R175
6m/m
J91
6m/m
J92
6m/m
J93
270P
C175
A1023Y
Q175
R168
A1023Y
Q174
R167
A1023Y
Q173
560
R166
47/16V
C212
10KF
R213
510F
R214
510
R217
10K
R218
47/16V
C223
1K
R227
VR103
20KB
BASSBOOST
C51
470/63V
470/63v
47P
560
560
6m/m
J102
1SS133
J88
J10320m/m
U106
1K
R92
C3198GR
Q90
22K
R91
47K
R90
10
R15
6m/m
J30
A1266GR
Q12
24K
R21
6m/m
J31
100/16V
C12
68K
R25
102(M)
C21
24K
R22
6m/m
J32
910
R16
4.7K
R02
C3198BL
Q21
10K
R14
104P
C22
1K
R31
D11
10/25V
C15
15K
R35
47/25V
C16
12.5m/m
J35
L02
CL-500
C3200GR
Q156
22KF
R171
10m/m
J90
1SS133
D152
1SS133
D151
680
R156
100/63V
C157
473P
C156
120
R172
10m/m
C163
C1027Y
Q171
820
R173
1.5K
R163
R228
NJM2068LD
C228
R232
150K
R230
104(M)
C229
6.8K
R229
104(M)
C227
R04
C11
C3198GR
Q02
R05
A1266GR
Q11
R12
C14 47/16V
R13
J29
10/16V
C06
A1023Y
Q01
R01
100/16V
C13
10/0.5W
R03
R32
R33
A1268GR
Q22
R34
12.5m/m
CL-500
L01
J34
C63
C3200GR
Q153
C3200GR
Q152
22KF
R152
C152
2.2/50V
C151
R151
1/50V
R149
Q151
5.6KF
R150
2.2/50V
20m/m
J89
39K
47P
1K
LED01
R913
TOL-30aSBaCAa-B2
LED02
100/16V
56K
J305
J304
J303
8.2K
R63
R11
4.7K
430K
3.9K
10K
C60
6m/m
R62
U01
10.5KF
R60
1SS133
D03
TL494CN
A1266GR
Q33
220/0.5W
R51
220/0.5W
R41
A1266GR
Q23
1SS133
D04
J28
4.7K
22K
33K
15K
25m/m
J33
473P
C62
J70
15m/m
J71
J7525m/m
68P
10K
100K
J77
J108
J7825m/m
15m/m
J79
J8010m/m
C150
J104
J105
17.5m/m
J106
17.5m/m
J107
C225
R226
1K
HNRD-3401L
6m/m
6m/m
6m/m
7.5m/m
J08
J07
104P
4.7KF
15m/m
SCREW
4
8
12.5m/m
J36
12.5m/m
J37
12.5m/m
J38
3300/63V"HC"
15m/m
GTO301.1
330/16V
C921
1N4744
D921
330/16V
C913
20m/m
J8110m/m
J8210m/m
J8310m/m
22m/m
22m/m
5.6K
R225
10K
R224
683(M)
C226
SCREW
823(M)
5.6K
50KC
1K
R923
FH01
J01
J02
7.5m/m
WF-9402
7.5m/m
7.5m/m
7.5m/m
7.5m/m
7.5m/m
7.5m/m
D911
VR102
LPF
J03
7.5m/m
J06
J05
J04
J330
J300
J301
7.5m/m
7.5m/m
7.5m/m
J302
J306
J307
J308
CL-300
L03
2200/25V"WL"
C04
C03 104P
J09
J11
J12
J13
J10
10m/m
10m/m
10m/m
10m/m
10m/m
2200/25V"WL"
C05
37PHI
J73
17.5m/m
17.5m/m
330/16V
22K
6m/m
A1268GR
A1268GR
100P
1.5K
473P
A1268GR
1K
102P
A1268GR
10KF
R211
102P
C211
2KF
R212
6m/m
J109
4.7KF
R208
470P
C108
4.7KF
R108
6m/m
J110
15K
R250
VR101
R210
C52
47
750F
T01
J74
U103
C210
20KB
VOLUME
20m/m
D161
D160
R187
D187
C155
2
6
1SS133
C187
C3200GR
Q187
1SS133
J120
C165
C1027Y
Q165
C1027Y
Q164
C1027Y
Q163
330/16V
C923
NJM2068LD
47/16V
R209
3
5(0.7x9):17(0.7x4):10(0.7x1)
7
J72
C911
R160
1N4744
J85
Q162
Q161
C160
R162
R161
6m/m
J76
C154
Q154
R153
C153
J8410m/m
Q155
17.5m/m
J108
NJM2068LD
U104
DST0013-00
3
6m/m
X
6m/m
6m/m
C01
D01
2
2
1
5
100/2W
R30
3300/63V"HC"
1SS133
100P
15K
6m/m
100/63V
270P
5m/m
J86
6m/m
J87
47KF
R106
22P
C106
9.4KF
R207
10P
C104
47KF
R103
47KF
R102
47KF
R105
22P
C105
6m/m
J111
9.4KF
R107
100
22/16V
C103
C102
22KF
R101
C101
102P
R
IN4004
D02
C801
473P
1N5404
BJ01
47
BJ02
47
25m/m
1K
47
17.5m/m
17.5m/m
17.5m/m
222(M)
C08
473P
C33
R6110K
3RD
FR154
D54
FR154
FR154
D52
D53
473P
C53
220/2W
220/2W
R921
R911
10
1.5K
0.1/3W
10
R164
100/0.5W
R165
10/0.5W
0.1/3W
10
0.1/3W
22P
C205
47KF
R205
10KF
R240
NJM2068LD
47KF
R202
10P
C204
6m/m
J112
47KF
R203
10KF
R140
22P
U101
C206
47KF
22/16V
R206
22/16V
22/16V
C202
C203
22KF
R201
C201
102P
LL
R
DJB-554A
TER01
J1417.5m/m
J1517.5m/m
R54
J1617.5m/m
J1717.5m/m
R53
J18
J19
47
J2017.5m/m
J2117.5m/m
47
J22
J2317.5m/m
1K
47
J2417.5m/m
J2517.5m/m
105(M)"TL"
C31
3RD.
6m/m
J26
C67
FR154
D51
C57
C82
Q82
C83
15m/m
J27
R182
R186
R185
R181
R184
R180
R183
NJM2068LD
U102
4.7/50V
C143
R144
100K
55m/m
R55
R52
R45
R44
R42
R43
105(M)"TL"
W01
D81
47/50V
R81
47/50V
22P
10/50V
Q182
Q181
Q180
104P
C912
104P
C922
6m/m
J113
22P
C241
10KF
R241
1K
R242
1K
R142
1K
R243
22P
C141
10KF
R141
1K
R143
C243
R244
100K
RCA101
FQP50N06
Q55
FQP50N06
Q54
FQP50N06
Q53
FQP50N06
Q45
FQP50N06
Q44
FQP50N06
C32
Q43
WIRE
X
1SS133
1SS133
220K
10K
J108
TIP35C
1
TIP35C
1
TIP35C
1
4.7/50V
3
D80
R80
C182 220P
C180 220PC181 220P
Page 13
GTO 301.1/301.1II
12
Q55
Q54
Q53
Q45
Q44
Q43
Q182
Q181
Q180
C210
FH01
L03
J28
T01
J73
J72
GTO301.1
J74
C921
C911
R160
D911
R210
D921
C913
J76
J77
J78
J83
J84
J108
U104
VR102
R923
Q162
Q161
C160
R161
C154
Q155
R162
R153
C153
J85
Q154
C211
R212
J109
R208
C108
R108
J110
R250
R51
C62
R224
C226
C225
R41
R225
R04
C11
Q02
R92
R05
Q90
Q11
R91
R12
R63
R11
C60
R62
R60
D03
Q33
Q23
D04
J33
J71
J75
J79
J80
J81
J82
J104
J105
J106
J107
R226
LED01
LED02
J70
Q153
Q152
R33
R152
C152
C151
R151
R149
Q151
R150
C150
R90
R15
C14
J30
R13
J29
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U01
R21
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C12
R25
C21
R22
J32
C06
R16
R02
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R01
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R14
C13
C22
R03
R31
D11
R32
C15
R35
Q22
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C16
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J35
C63
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C157
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R172
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J89
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C228
R232
R230
C229
U106
R229
C227
R913
TER02
J39
J40
J41
R198
R197
C197
R196
L196
BJ03
J42
J43
J44
J45
J46
J47
J48
J49
R157
C159
R158
C158
C175
Q175
R168
Q174
R167
Q173
R166
J102
VR103
J50
J51
J52
J53
J54
J55
R199
J69
J68
R213
R214
R217
R218
C223
R227
C212
J66
J65
J62
J63
R195
J94
R192
J95
J96
J97
R194
R191
R193
R190
R215
R216
U105
R223
MOD01
J61
C51
C61
R174
R175
J91
J92
J93
J103
J101
Q219R211
C220
R220
J100
R219
C219
R221
R222
TH01
J58
J57
D41
D42
J59
J60
J56
Q198
Q199
C199
Q192
Q172
Q191
Q190
TER01
C01
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J301
J302
C801
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C04
BJ01
R55
R54
C32
C31
W01
D80
R80
R81
C912
C922
J113
C241
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R242
R142
R243
C141
R141
R143
R244
3RD.
J26
D81
D51
C67
C57
C82
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C83
J27
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R183
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C143
R144
R185
BJ02
J14
J15
J16
J17
R52
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J18
J19
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J20
J21
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J22
J23
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R43
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C33
3RD
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D53
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R182
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R181
R164
R165
R180
C205
R205
R240
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R206
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C102
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VR101
C101
Page 14
13
GTO 301.1/301.1II
FET-00-00045 F.E.TMUTTING J-FETJ108Q82,1512
TRS-00-00087 TRANSISTORSMALL SIGNAL PNPKTA1023YQ01,173,174,1754
TRS-00-00088 TRANSISTOR SMALL SIGNAL NPNKTC1027YQ163,164,165,1714
TRS-00-00091 TRANSISTORSMALL SIGNAL PNPKTA1268GRQ22,154,155,161,1625
TRS-00-00111TRANSISTOR SMALL SIGNAL NPNKTC3200GRQ152,153,156,1874
TRS-00-00090 TRANSISTORSMALL SIGNAL PNPKTA1266GRQ11,12,23,334
TRS-00-00110 TRANSISTORSMALL SIGNAL NPNKTC3198GRQ02,90,198,199,2195
TRS-00-00109 TRANSISTOR SMALL SIGNAL NPNKTC3198BLQ211