Marschall JCM900 4100 - VALVE FAILURE INDICATORS & FUSES; MAINS INPUT & POWER FUSE

MAINS INPUT FUSE
120V ~ 60Hz
375 Watts
EFFECTS
SEND
HIGH LOW
LOOP
LEVEL
RETURN RECORDING
COMPENSATED
DIRECT
(4)16 8
HIGH LOW
FAIL
OPV-1-4 OPV-2-3
DO NOT USE WITHOUT CONNECTING
SPEAKER LOAD
SEE MANUAL FOR CORRECT OPERA
TION AND RATING
T500mA T500mA
220/240V - T2A
110/120V - T4A
FAIL
LINE OUTPUT POWER LEVEL OUTPUT
OUTPUT
VALVE FUSE
WARNING!: SHOCK HAZARD. DO NOT OPEN.
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO
RAIN OR MOISTURE. THIS APPARATUS MUST BE EARTHED.
AVIS!: RISQUE DE CHOC ELECTRIQUE. NE PAS OUVRIR. POUR EVITER LES RISQUES
D’INCENDIE ET DE DECHARGES ELECTRIQUES, N’EXPOSEZ JAMAIS CET APPAREIL A L’HUMIDITE
OU A LA PLUIE. CONNECTER CET APPAREIL A LA TERRE.
CAUTION!: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER.
NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
ATTENTION!: POUR EVITER LES RISQUES DE DECHARGES ELECTRIQUES, NE PAS
OUVRIR LE COUVERCLE. CET APPAREIL NE COMPORTE AUCUNE PIECE SUSCEPTIBLE D’ETRE
REPAREE PAR VOS SOINS. FAITES TOUJOURS APPEL A UN TECHNICIEN QUALIFIE POUR TOUTE
REPARATION.
OUTPUT : 100 WATTS RMS INTO 8Ω
!
Made in England by
Marshall Amplification plc,
Bletchley, Milton Keynes, England.
IMPEDANCE
SELECT
MODE
LOUDSPEAKERS
100W R.M.S.
WARNING: DO NOT OBSTRUCT VENTILATION GRILLES
ATTENTION: NE PAS OBSTRUER LES GRILLES DE VENTILA
TION
tonal character and playing feel.
9. & 10. VALVE FAILURE LED (OPV1 – 4)
VALVE FUSE (OPV1 – 4)
In the case of output valve failure
the fuse (item # 10) will operate,
illuminating the FAIL LED (item # 9).
This fuse applies to output valves 1 & 4.
The amplifier will continue to function
on reduced power – valves 2 & 3 only. In
this event service should be obtained as
soon as possible to prevent premature
aging of output valves 2 & 3.
11. & 12. VALVE FAILURE LED (OPV2 – 3)
VALVE FUSE (OPV2 – 3)
Similar functions to items #9 & #10
above, but applying to output valves 2
& 3.
13. MAINS INPUT
Connects the amplifier to the mains
power supply. NOTE: Always ensure
that the incoming mains voltage
matches that of the amplifier. If in doubt
consult your Marshall dealer.
14. MAINS POWER FUSE
Protects the amplifier and mains supply
in the event of a fault. NOTE: Always
ensure that the fuse value matches the
labelling on the amplifier rear panel. If in
doubt consult your Marshall dealer.
REAR PANEL FUNCTIONS (CONT.)
8. 10.9. 12.11. 14.13.