Sharp XL-3000W Service Manual page 19

4. Electronic volume Test Mode (TEST 3)
When this test mode is obtained, the following display lights
for one second.
In this mode, volume is -14 dB (STEP28), BASS/TREBLE
is set to 0 (0 dB) and SURROUND mode to OFF, and start-
up function to CD, respectively. The button operations in
the test mode are the same as those of ordinary operation
except volume UP/DOWN.
(1) The display is the same as that of ordinary operation
except test mode setting.
(2) Unlike the ordinary state, the volume is controlled with
the volume UP/DOWN button in accordance with the
following three steps.
∞
Volume- (STEP 0)
Volume-14 dB (STEP 23)
Volume-0 (STEP 30)
(3) BASS/TREBLE and SURROUND are switched when
button is pressed.
5. Timer test Mode (TEST 4)
When this test mode is obtained, the following display lights
for one second.
Set the current time and timer time according to the following
procedure to reproduce the timer.
1.Set the current time to 1:00, the timer to ON time 1:05, the
function to CD, and volume to STEP 12, respectively. One
minute is counted as one second, and the timer is reproduced.
The fade-in (when playback is started) is executed at a rate
of one step for 1 sec. After completion of fade-in, the fade-
out is executed at a rate of one step for 1 sec (WAIT 1 sec
inserted).
After completion of fade-out, the power is turned off (after
WAIT 1 sec), and the mode is shifted to the standby.
The display during operation is the same as that of ordinary
timer operation.
6. LCD Test Mode (TEST 5)
When the LCD test mode is obtained, all the LCD segments
are lighted. Then pressing the "PLAY" button switches
display as below.
Lighting of all segments
Lighting of odd segments
Lighting of even segments
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XL-3000W