Sharp XL-3700 Service Manual - Page 15

Electronic volume Test Mode TEST 3, Timer test Mode TEST 4, LCD Test Mode TEST 5

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4. Electronic volume Test Mode (TEST 3) When this test mode is obtained, the following display lights for one second. XL-3600 XL-3700/C 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 - 15 -

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XL-3600
XL-3700/C
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..
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.
5. Timer test Mode (TEST 4)
When this test mode is obtained, the following display lights for one second.
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