TROUBLESHOOTING GUIDE
WON’T TURN ON
1. Make sure AC cord is securely connected at
both ends.
2. Verify the power source with something you
know works.
3. Check the mains fuse, and replace if
necessary (if it blows again, refer to
qualified service personnel).
NO SOUND
1. Check input cables.
2. Check volume controls.
3. Make sure the selected channel volume
and/or gain controls are turned up.
4. Check to see if the effects loop is engaged
and the level turned down.
5. Check speaker cable to see if it is
disconnected or shorted.
6. Make sure that the impedance selector is
fully engaged in its detent.
7. Check the standby switch.
8. Check the DC fuse. If blown, replace with a
F1A 250V fuse (if it blows again, refer to
qualified service personnel).
9. Check for blown speakers.
WONT SWITCH CHANNELS
1. Make sure footswitch is securely connected.
2. Make sure front panel switch is set to
CLEAN when using footswitch.
BOOST FOOTSWITCH FUNCTION NOT
OPERATING
1. Make sure footswitch is securely connected.
2. Front panel BOOST switch must be ON for
BOOST footswitch to operate.
EFFECTS FOOTSWITCH FUNCTION NOT
OPERATING
1. Make sure footswitch is securely connected.
2. Rear panel BYPASS switch must be in the
OUT position for EFFECTS footswitch to
operate.
RUNNING HOT
1. Make sure that the unit has adequate
ventilation.
2. Make sure that the impedance selector is
set to the proper impedance.
3. Power tubes may be under-biased (refer to
qualified service personnel).
DISTORTION
1. Check the speakers.
2. Check the speaker cable for shorts.
3. Check the impedance setting.
4. Check the signal level at other devices in the
signal path or in the loop.
5. Power tubes may be over-biased (refer to
qualified service personnel).
LOSS OF POWER ON 40W MODE
1. Check rectifier tube (refer to qualified
service personnel).
BLOWING MAINS FUSE
1. Bad power tube or other internal power
supply component (refer to qualified service
personnel).
BLOWING DC FUSE
1. Check speakers and speaker cable.
2. Bad power tube or other internal component
(refer to qualified service personnel).
SPECIFICATIONS
MODEL: SIG:X, MODEL NUMBER G100SX
POWER REQUIREMENT: 350W
POWER AMP OUTPUT:
High Power: 100W RMS @ 5% THD, 1kHz sine
into 8
Ω
Low Power 40W RMS @ 5% THD, 1kHz sine
into 8
Ω
INPUT IMPEDANCE: 1M
Ω
OUTPUT IMPEDANCE: 4
Ω
/ 8
Ω
(selectable),
16
Ω
(fixed)
FUSES:
100V UNITS: MAINS
T5A, 250V
DC
F1A, 250V
120V UNITS:
T4A, 250V,
DC
F1A, 250V
220V-240V UNITS:
T2A, 250V,
DC
F1A, 250V
FOOTSWITCH (Included): 5-button, (FC-5S)
CHANNEL(3) / BOOST/ EFFECTS
DIMENSIONS:
HEIGHT:
10.500 in (26.7 cm)
WIDTH:
29.250 in (74.3 cm)
DEPTH:
9.500 in (24.1 cm)
WEIGHT: 53 lb (24 kg)
Product specifications are subject to change without notice.
