XL-60 (serv.man7). Test mode - Sharp Audio Service Manual (repair manual). Page 5

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B) Cautions concerning the ASPM test mode
a) Cancel: When the "ASPM" button is pressed again during operation after it was first pressed in the test mode, the ASPM

test mode is canceled (interrupted), and the initial state FM 106.50 MHz (ST) indication is restored.

     (To check the data which was preset and stored until interruption, use the preset UP/DOWN button. (JOG UP/DOWN is

also available after JOG mode button operation.)

    wing indication appears.

b) The ASPM test mode is started in FM stereo state (FM 106.50 MHz ST). If any button other than ASPM button is pressed

even only once after it is started, it becomes invalid, and the ASPM test mode becomes inoperable.

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

The "ASPM" 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 indicated.
                     (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 set, the "MEMORY/SET" button cannot be operated (the 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 so that the PI code is not duplicated (by seeing the PI code and VSM (S meter value).  When

the PI code is duplicated, both VSM (S meter value) are compared. The greater one is stored in memory but the smaller
one is discarded.

    For the stations having the same PI code, only one station having the highest electric field intensity is stored, and the

memory is refilled. The channels which can be preset in the ASPM test mode are 01 to 03CH. If 3 stations are stored, 30
CH are filled.

    For the stations having the same electric field intensity, the former (preceding station) is stored.

e) Signal of already stored same frequency is not stored. (The previously stored data is kept.)

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

Up to 3 stations (1 to 3CH) can be indicated. This indication is
given only in the ASPM test mode. In other mode (not in ASPM
test mode) the number of stored stations -> END is indicated

* When the "PRESET UP" button or "PRESET DOWN" button is pressed after completion, the following indication appears.

* 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 greater than 105.50 MHz (PR-01), data is overwritten on 105.5 MHz which is contained in
"PR-01". (Frequency is changed to 107.50 MHz.)
If VSM is equal, previously stored 105.50 MHz remains.

When RDS station is stored in the test mode, the 2-second blinking of preset No. is not performed so as to save the production
line test time. ("RDS" lighting is performed.)

Note: RDS operation is performed in FM MONO state. However, in case of ASPM, ASPM scan is performed after BAND is

changed from FM MONO to FM STEREO.

Note: When the 

 (PLAY) button is pressed in TEST 2 mode, it is possible to check the sate of IF count. However, this

function is for designer. It is not necessary for other sections.

CH indication
(for 2 seconds)

Frequency indication
(for 2 seconds)

Time series indication of PS name indication is enabled.
(The same as in case of Ordinary)

NO PS

(Blinking for 5 seconds: 1 Hz)

Note: If PS is fixed after the frequency indication is

resumed, the PS name indication is restored.

FM 106.50 MHz

When the PS data is given in case of NO PS indication, the
PS name indication is restored.

PS name

Note: If PS is fixed after the frequency indication is

resumed, the PS name indication is restored.

NO PS

(Blinking for 5 seconds: 1 Hz)