Sharp XL-3000W Service Manual page 18

Compact audio system
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XL-3000W
3. Tuner Test Mode (TEST 2)
1. Outline of tuner (radio) test mode
The tuner test mode is intended to store the adjustment
and measurement frequencies in the preset memory
CH. When adjusting the tuner section in the production
line, adjusting personnel are not required to set frequency.
2. Details of tuner test mode
Press the "REW/PRESET DOWN" and "CD PLAY"
buttons in POWER OFF state and turn on the power by
the use of "ON/STAND-BY" button to preset and store
frequency for adjustment and measurement of destination
specified by the AREA terminal in the preset memory
CH. However, Ordinary 1 and Ordinary 2 are stored in
the destinations (selected by SPAN switching operation)
when the test mode is obtained.
("FF
" + "MEMORY/SET" KEY SPAN CHANGE)
(As for frequencies to be preset and stored for each
destination, refer to item 3.)
The tuner test mode is started from preset No.1.
The operations of test mode are identical with the ordinary
operations of TUNER function. FUNCTION switching is
invalid.
It is necessary to discard the content of preset memory
when the tuner test mode is ended; be sure to write "0000"
or "1111" bits in the memory to be checked for judging
memory error at initial setting and to initialize memory.
When the tuner test mode is obtained, the following display
lights for one second.
• The TUNER TEST2 mode is obtained with
+ MEMORY + ON/STAND-BY.
Turn off AC in the TEST2 mode to restore the initial state.
Turn off POWER to protect the memory of TEST2 mode.
Turn off POWER again to obtain the ordinary operation
while the data is stored in the memory (besides TUNER).
If AC OFF state is maintained in this state for about 1/2 day,
start is executed in the initial state.
• To clear the whole memory, insert the AC cord, pressing
MEMORY + CD PLAY.
3. Preset frequencies for various destinations (random
preset memory)
BAND
CH
1
2
3
FM
4
STEREO
5
CH
BAND
6
7
8
AM
9
10
CH
BAND
16-25
26
27
28
FM
29
MONO
30
• The slant line sections of the table store no memory.
– 18 –
FM
FM 87.50 MHz
FM108.00 MHz
FM 98.00 MHz
FM 90.20 MHz
FM106.00 MHz
AM
AM 531 kHz
AM1602 kHz
AM 990 kHz
AM 612 kHz
AM1404 kHz
FM
FM106.00 MHz
FM 90.20 MHz
FM 98.00 MHz
FM108.00 MHz
FM 87.50 MHz

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