DOWNLOAD Sharp XL-3000 (serv.man4) Service Manual ↓ Size: 849.79 KB | Pages: 22 in PDF or view online for FREE

– 17 –

Press the following buttons in this state to obtain the operations specified below.

"POWER" ................. Test mode and power turned off to shift to the ordinary standby mode.
"FF/FWD" ................. The pickup slides toward the outer periphery while this button is pressed.
"REW/REV" .............. The pickup slides toward the inner periphery while this button is pressed.  If PICKUP IN is on, input is

invalid.

"PLAY" ..................... Invalid
"STOP" ..................... Return to step 1

"FUNCTION" ........... Shift to step 6
"MEMORY" .............. Shift to step 5
*If the focus is not received, the process returns to step 1.

Press "MEMORY" key during step 6 operation to display automatically adjusted values on LCD in the order as below.  Item
names are displayed by left alignment, and adjusted values by right alignment in hexadecimal numbers.  Operations other

than display are as same as those for step 5.

a) "Fb" is displayed on the left of LCD.  FTBAST command (D480) is transmitted to designate focus balance adjusting

register.  Then data read by read command SRC2 (2) are displayed in hexadecimal numbers.  After waiting 2 seconds,
operation is shifted to (b).

b) "FG" is displayed on the left of LCD.  FTBAST command (D481) is transmitted to designate focus gain adjusting register.

Then data read by read command SRC2 (2) are displayed in hexadecimal numbers.  The upper two bits, which are invalid,
are displayed as "00".  After waiting two seconds, operation is shifted to (c).

c) "Tb" is displayed on the left of LCD.  FTBAST command (D482) is transmitted to designate tracking balance adjusting

register.  Then data read by read command SRC2 (2) are displayed in hexadecimal numbers.  After waiting 2 seconds,
operation is shifted to (d).

d) "TG" is displayed on the left of LCD.  FTBAST command (D483) is transmitted to designate tracking gain adjusting register.

Then data read by read command SRC2 (2) are displayed in hexadecimal numbers.  The upper two bits, which are invalid,
are displayed as "00".  After waiting 2 seconds, operation is shifted to (e).

e) "FO" is displayed on the left of LCD.  FTBAST command (D484) is transmitted to designate focus offset adjusting register.

Then data read by read command SRC2 (2) are displayed in hexadecimal numbers.  After waiting 2 seconds, operation
is shifted to (f).

f) "TO" is displayed on the left of LCD.  FTBAST command (D485) is transmitted to designate tracking offset adjusting

register.  Then data read by read command SRC2 (2) are displayed in hexadecimal numbers.  After waiting 2 seconds,
operation is shifted to (g).

g) "FF" is displayed on the left of LCD.  FTBAST command (D486) is transmitted to designate RF amplitude adjusting register.

Then data read by read command SRC2 (2) are displayed in hexadecimal numbers.  After waiting 2 seconds, operation
is shifted to (a).

– 18 –

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.

• The slant line sections of the table store no memory.

16-25

26

FM106.00 MHz

27

FM  90.00 MHz

28

FM

FM  98.00 MHz

29

MONO

FM108.00 MHz

30

FM  87.50 MHz

1

FM  87.50 MHz

2

FM108.00 MHz

3

FM

FM  98.00 MHz

4

STEREO

FM  90.00 MHz

5

FM106.00 MHz

6

AM  522 kHz

7

AM1620 kHz

8

AM

AM  990 kHz

9

AM  603 kHz

10

AM1404 kHz

– 19 –

ASPM TEST Mode starts at TEST Mode 2.  Press FUNCTION button to obtain the test mode. It starts up at FM 106.50 MHz.
(ST mode)

Data of 27 CH of 04 to 30 CH are all stored at FM 87.50 MHz (ST).
01 to 03CH are kept empty (If data of 3 CH are stored, max. 30 CH is filled.)
When the ASPM button is operated in the TEST mode 3, the preset data is cleared (overwrite).

A) Operation with ASPM button
Press the " FUNCTION " button or keep it pressing. (Any button other than FUNCTION button cancels the ASPM test mode.)

FM 105.00 MHz (ST) is displayed, and scan is started.
(Start from 105.00 MHz)

During scanning the frequency is displayed.

End at FM 108.00 MHz (ST)

Only the number of preset and stored stations (number of CHs: max. 3 stations) is displayed for one second in the ASPM
test mode.  When two stations are stored, "_2 MEMORY" is displayed (lighted) for one second.
                                                                              ("02 MEMORY" indication is not given.)

"END" is not displayed in the case other than 0 memory.

01CH display (for one second)

Frequency display (for one second)

02CH display (for one second)

Frequency display (for one second)

03CH display (for one second)

Frequency display (for one second)

After consecutive longitudinal display for one second, the display of FM 106.50 MHz (ST) is restored.
(Without pressing the preset button, automatic longitudinal display shows the content of memory.)
* PS name is not displayed (while the content of memory is checked)
* If only 1 CH data is stored;  FM P-01 -> FM 106.00 MHz -> FM 106.50 MHz (ST)
                     (Example)        (1 sec)         (1 sec) (ST)       End display

Press the FUNCTION button once in the TUNER TEST mode
to display FM 106.50 MHz (ST) and to store data of 04 to 30
CH at 87.50 MHz (ST).  Press the FUNCTION button again to
obtain the FUNCTION test operation mode.

In case of "_0 MEMORY", the process ends, and
the FM 106.50 MHz (ST) state is restored.

Confirmation of content of memory
(Examples of concrete display)

(Example)
FM P-01

FM 105.50MHz(ST)

FM P-02

FM 106.50MHz(ST)

FM P-03

FM 107.50MHz(ST)

Not in zero-memory state

– 20 –

B) Cautions concerning the ASPM test mode
a) Cancel: Press the "FUNCTION" button again during operation after pressing it at first in the test mode to cancel (interrupt)

the ASPM test mode and to restore the initial state FM 106.50 MHz (ST) display.

(If the test mode is interrupted, use the preset UP/DOWN button to check the data preset and stored until interruption.)

b) The ASPM test mode starts in FM stereo state (FM 106.50 MHz ST). When pressing any button other than FUNCTION

button only once after it starts, it becomes invalid.  Thus the ASPM test mode becomes inoperable.

     Invalid: The Ordinary mode is obtained while 4 to 30CH data remain in memory (or 1 to 30 CH MAX data remain in memory).

The "FUNCTION" button can be repeatedly operated until 01CH to 03CH is filled (up to 3 stations in memory).
The number of stored stations -> Channel No. -> Frequency -> FM 106.50 MHz (ST) is displayed.
                     (1 second)                 (1 second)       (1 second)     (Initial state)

c) Broadcast (without PI code) which is not RDS is not preset and stored in memory.

When the ASPM mode is obtained, the "MEMORY/SET" button cannot be operated. (Test mode is canceled).
Operation is possible after ASPM test mode operation.

d) Scan frequency: 105.00 MHz -> 108.00 MHz

Data are stored in memory by monitoring the PI code and VSM (S meter value) so that the PI code is not duplicated.  When
the PI code is duplicated, both VSM (S meter value) are compared. The larger one is stored in memory but the smaller
one is discarded.
For the stations having the same PI code, only one station with the highest electric field intensity is stored, and the memory
is refilled.
The channels that can be preset in the ASPM test mode are 01 to 03CH.  If 3 stations are stored, 30 CHs are filled.
For the stations with the same electric field intensity, the former (preceding station) is stored.
For the stations having the same electric field intensity, the former (preceding station) is stored.

e) Already stored signals with same frequency are not stored. (The previously stored data is kept.)

f) The order of preset memory is 01CH -> 02CH -> 03CH.

Max, 3 stations (CH1 to 3) can be displayed in ASPM mode.
In the modes other than ASPM mode, the number of stations
stored and then 'END' are displayed.   Be careful of this point.

* Press "PRESET UP" button or "PRESET DOWN" button after completion to obtain the following display.

* If signal exists at 106.50 MHz, the following indication appears.

In case of memory storage with ASPM, for example, if RDS station 107.50 MHz has the PI code (the same as that of RDS
station 105.50 MHz) and VSM is larger than 105.50 MHz (PR-01), data is overwritten on 105.5 MHz that is contained in "PR-
01". (Frequency is changed to 107.50 MHz at "PR-01".)
If VSM is equal, previously stored 105.50 MHz remains.

When storing RDS station in the test mode, preset numbers do not blink for 2 seconds in order to save the production line
test time. ("RDS" lights up.)

Note: RDS is operated in FM MONO state. However, in case of ASPM, ASPM scan is operated after BAND is changed from

FM MONO to FM STEREO.

Note: Press the STOP button in TEST 2 mode to check the state of IF count. Since this function is for designer, it is not

necessary for other sections.

CH display
(for 2 seconds)

Frequency display
(for 2 seconds)

Longitudinal display of PS name is possible.
(The same as in case of Ordinary)

NO PS

(Blinking for 5 seconds: 1 Hz)

Note: If PS is fixed after the frequency display is resumed

in case of NO PS display, the PS name is displayed.

FM 106.50 MHz

When the PS data is given in case of NO PS display, the PS
name is displayed.

PS name

Note: If PS is fixed after the frequency display is resumed

in case of NO PS display, the PS name is displayed.

NO PS

(Blinking for 5 seconds: 1 Hz)