Marshall Amplification Echohead - Manual (Page 5)

Technical Specification
Power: 9V DC Centre Negative Regulated
Minimum Current Draw: 80mA
Controls: Mode, Delay Time, Feedback, Level
Switches: On/Off Switch
Indicators: On/Off LED
Jacks: 2 Input, 2 Output 'Jack sockets'
Input Impedance: 1M Ω
Output Load Impedance: < 1k Ω
Dimensions: 120mm x 65mm x 55mm
Weight: 510 grammes
7 6
ENGLISH
Battery Replacement
1. To replace the battery, open the easily accessed coin screw
battery cover plate by loosening screw as shown, then
disconnect the battery connector lead.
2. Use PP3 or equivalent battery
(for improved battery life use
alkaline type).
3. Always ensure that the battery
is removed when the pedal is
not in use for long periods.
4. Dispose of old battery in a
safe place.
WHAT IF
NO
OUTPUT
SOUND TOO
TREBLY OR
FIZZY
UNUSUAL
HUM
BASS
FEEDBACK
SOUND TOO
MUSHY OR
BASSY
UNUSUAL
FEEDBACK
INDICATOR
LED NOT
ON
NOISE IN
BYPASS
CHECK BA
TTER
Y
CHECK LEADS CHECK PEDAL CONTROLS DC INLET CHECK AMP CONTROLS CHECK GUIT
AR
REDUCE
TREBLE
REDUCE
TREBLE
INPUT
LEAD
Trouble Shooting
✓ ✓
✓
✓
✓
✓
✓
✓ ✓ ✓ ✓
✓
✓ ✓ ✓
✓
✓
✓ ✓
✓ ✓ ✓
MOVE AWAY
FROM AMP
PICKUPS
MAY BE
VIBRATING