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2
English
| Replacing the amplifier tubes
Replacing the amplifier tubes
Illustrations for the instructions can be found
on the fold-out page at the beginning of this
instruction manual.
ATTENTION!
▷
Do not use the HE 1 when the protective cylinders of the amp-
lifier tubes are removed.
▷
When replacing the tubes, wear the supplied gloves so as not
to damage or contaminate the indium tin oxide (ITO) coating
of the protective cylinders and the quartz glass housings of
the tubes.
▷
Always replace all 8 tubes with new ones. Arrange the tubes
in the amplifier exactly as the tubes were arranged in the box
when delivered.
1. Put on the supplied gloves and switch on the amplifier so that
the amplifier tubes fully extend.
2. Set the power switch to
OFF
to switch the HE 1 off and wait
until the status LED goes off (up to 30 seconds).
3. Push and hold the safety pin on the power plug and pull the
power plug from the IEC mains socket.
4. Loosen the quarter turn fastener of the two front protective
cylinders by turning the protective cylinders a quarter turn
counter-clockwise.
5. Remove the old tubes and dispose of them at collection points
for waste electrical and electronic equipment or return them to
your specialist dealer.
Содержание HE 1
Страница 33: ...2 HE 1 ITO 8 1 2 HE 1 OFF LED 30 3 4 1 4 5 6 8...
Страница 34: ...3 7 1 4 8 LED 9 CROSS FEED OFF HIGH HE 1 ON 10 HE 1 HE 1 LED LED DE FR EN ES PT NL FI JA KO ZH TW ID RU AR...
Страница 35: ...4 EU RoHS 2011 65 EU Web www sennheiser com download WEEE 2012 19 EU Sennheiser...
Страница 37: ...2 HE 1 ITO 8 1 2 HE 1 OFF LED 30 3 4 1 4 2 5 6 8...
Страница 39: ...4 EU RoHS 2011 65 EU www sennheiser com download WEEE 2012 19 EU Sennheiser...
Страница 41: ...2 HE 1 ITO 8 1 2 HE 1 OFF LED 30 3 4 5 6 8 7 8...
Страница 42: ...3 LED 9 CROSS FEED OFF HIGH HE 1 ON 10 HE 1 HE 1 LED LED DE FR EN ES PT NL FI JA KO ZH TW ID RU AR...
Страница 45: ...2 HE 1 ITO 8 1 2 HE 1 OFF LED 30 3 4 5 6 8 7 8...
Страница 46: ...3 LED 9 CROSS FEED OFF HIGH HE 1 ON 10 HE 1 HE 1 LED LED DE FR EN ES PT NL FI JA KO ZH TW ID RU AR...
Страница 47: ...4 RoHS 2011 65 EU www sennheiser com download WEEE 2012 19 EU Sennheiser...
Страница 53: ...2 HE 1 ITO 8 1 2 HE 1 OFF 30 3 4 5...
Страница 54: ...3 6 8 7 8 9 CROSS FEED OFF HIGH HE 1 ON 10 HE 1 HE 1 DE FR EN ES PT NL FI JA KO ZH TW ID RU AR...
Страница 55: ...4 RoHS 2011 65 www sennheiser com download WEEE 2012 19 Sennheiser...
Страница 57: ...2 HE 1 ITO 1 1 2 2 OFF HE 1 30 LED 3 3 4 4 5 5 6 6...
Страница 58: ...3 7 7 8 8 9 9 CROSS FEED OFF HE 1 HIGH ON 10 HE 1 HE 1 DE FR EN ES PT NL FI JA KO ZH TW ID RU AR...
Страница 59: ...4 RoHS 2011 65 EU www sennheiser com download WEEE 2012 19 EU Sennheiser...