JBL GTO 601.1 (serv.man13) Service Manual ▷ View online
7
INSTALLATION AND SETUP
To Neon
Power
Supply
To Neon
Power
Supply
Figure 13. Installing neon tubes in a JBL GTO amplifier.
TROUBLESHOOTING
SYMPTOM
LIKELY CAUSE
SOLUTION
No audio
No voltage at BATT+
Check voltages at
(POWER LED
or REM terminals,
amplifier terminals
is off)
or bad or no ground
with VOM
connection
No audio
DC voltage on
Amplifier may need
(PROTECT LED
amplifier output
service; see enclosed
flashes every
warranty card for
4 seconds)
service information
No audio
Amplifier is
Make sure amplifier
(PROTECT
overheated
cooling is not blocked
LED is on)
at mounting location;
verify speaker system
impedance is within
specified limits (see
“Specifications” on
the next page)
verify speaker system
impedance is within
specified limits (see
“Specifications” on
the next page)
No audio
Voltage less than 9V on
Check vehicle
(PROTECT
BATT+ connection
charging system for
and POWER
defective voltage
LEDs flash)
regulator
SYMPTOM
LIKELY CAUSE
SOLUTION
No audio
Voltage more than 16V
Check vehicle
(PROTECT
or less than 8.5V on
charging system for
LED is on)
BATT+ connection
defective voltage
regulator
Distorted audio
Input sensitivity is
Check INPUT
not set properly, or
LEVEL setting; or
amplifier or source
check speaker wires
unit is defective
for shorts or grounds
Distorted audio
Short circuit in
Remove speaker leads
and PROTECT
speaker or wire
one at a time to locate
LED flashes
shorted speaker or
wire, then repair
wire, then repair
Music lacks
Speakers are not
Check speaker
“punch”
connected properly
connections for
proper polarity
proper polarity
GTO Amp OM 2/3/04 3:54 PM Page 7
6
Grand Touring
Grand Touring
7
8
HEA-0 1-156AA
HEAT SINK MAIN
AL/EXTRUSI O N(L=380.0mm)
W/Spray black color
1
PAN-06-255AA
PANEL FR O NT
EGI, 1.2t
W/Painting & silkscreen
1
PAN-06-256AA
PANEL REAR
EGI, 1.2t
W/Painting & silkscreen
1
C O V-22-023A0
WIND O W PLATE
ACRYLIC, 3.0t(L=379.5mm)
1
BAD-2 1-004AA
BADGE
ABS(XR-40 1)
W/Hot stamp & silkscreen
1
FOO -2 1-0 12AA
FOO T M O UNTING
ABS(XR-40 1)
W/Spray silkcolor
2
BKT- 14-523A0
BRACKET
LAMP
SK-5, BK
W/Heat treatment
4
BKT- 11 -00 1A0
BRACKET
TR(A)
SBHG, 11 0.0x22.5x2.0t
2
BKT- 11 -002A0
BRACKET
TR(B)
SBHG, 11 0.0x25.5x2.0t
2
BKT- 11 -0 11 A0
BRACKET
TR(C)
SBHG, 200.0x22.5x2.0t
1
BKT- 11 -0 12A0
BRACKET
TR(D)
SBHG, 200.0x25.5x2.0t
1
SUB-28-00 1A0
CUSHI O N TR BRACKET(A)
FIBER, 110.0x22.0x1.0t
2
SUB-28-084A0
CUSHI O N TR BRACKET(B)
FIBER, 200.0x22.0x 1.0t
1
SUB-33-00 1A0
CUSHI O N RUBBER
RUBBER,
10.0x20.0x1.6t
1
SIL-34-00 1A0
SILICO N PAD
SP 1000, 22.0x0.3t
420mm
SS-5
SUPP O RT PCB
NYL O N, L=4.8mm
3
SUB-28-5 19A0
PAPER SPACER
FIBER, 200.0x8.0x0.5t
2
SC5-NB-30050
SCREW
STT2 BH 3x5 NI
GR O UND WIRE
1
SC5-BB-30060
SCREW
STT2 BH 3x6 BK
SIDE PANEL + H/SINK
10
SC5-BB-30080
SCREW
STT2 BH 3x8 BK
RCA( 1),TERMINAL(3)
4
SC5-NB-30 120
SCREW
STT2 BH 3x12 NI
PCB + HEAT SINK
3
SC 1-BL-30080
SCREW
SML 3x8 BK
WIND O W + H/SINK
8
SC 1-NL-40 100
SCREW
SML 4x10 NI
FOO T+HEAT SINK
10
SC 1-NP-40 140
SCREW
SMP 4x14 NI
BRACKET
TR
8
SC4-NP-40250
SCREW
STT 1 PH 4x25 NI
ACCESS O RY
4
P O L-3 1-184A0
P O LY BAG(A)
VINYL, 550.0x400.0x0. 1t
SET
1
P O L-3 1-007A0
P O LY BAG(B)
VINYL, 160.0x280.0x0.03t
MANUAL
1
P O L-3 1-008A0
P O LY BAG(C)
VINYL, 80.0x100.0x0.03t
ACCESS O RY
1
INN-42-004A0
SN O W B O X
EPS, 378.0x 140.0x125.0
2
B O X-36- 146AB
B O X GIFT
SW# 1(B),528.0x385.0x 130.0
1
B O X-39- 157AB
B O X CART O N
DW#2, 543.0x280.0x4 10.0
1/2
MANUAL
ART PAPER
1
SUB-00-00 1A0
SILICAGEL
3g
1
SUB-00-002A0
SC O TCH TAPE
WIDTH 20mm
20cm
SUB-00-026A0
O PP TAPE
WHITE
3.2m
LAB-QC-000
1A
Q C STICKER
G O LD/BLACK
1
LAB-SR-0065A
SERIAL N O STICKER
WHITE/BLACK
4
LAB-MD-000
1A
STICKER
WHITE/BLACK
1
CAR-WA-0040A
WARRANTY
CARD
ART PAPER
1
LAB-00-0375A
WIND O W STICKER
"JBL" LO G O
1
LAB-00-0380A
E-MARK
STICKER
WHITE/BLACK
1
LAB-CE-0004A
CE STICKER
ARTPAPER
CLS-AM-2245
1
9
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