Sharp XL-3000V Turning on the test mode, Tuner Test Mode Test Outline of tuner radio test mode

XL-3000V

TEST MODE

The test mode applied to this microcomputer has three modes, namely the ordinary test mode for adjustment or measurement, the aging test mode, and the self-diagnosis test mode for self- judgment in case of final product inspection.

1. Turning on the test mode

For obtaining each test mode, press the ON/STAND-BY button, while keeping pressing the following two buttons in the ordinary stand-by mode (power off ). In this case, the main unit buttons are valid. When turning the ON/STAND- BY on with remote control buttons, test modes are not obtained.

[Ordinary test mode]

1.Tuner Test Mode (TEST 2)

.......................REW/PRESET DOWN + CD PLAY

2.Electronic Volume Test Mode (TEST 3)

.......................REW/PRESET DOWN + FF/PRESET UP

3.Timer Test Mode (TEST 4)

.......................FUNCTION + VOLUME UP

4.LCD Test Mode (TEST 5)

.......................FUNCTION + FF/PRESET UP

5.Electric CD Lid Aging Test Mode (TEST 8)

.......................FUNCTION + CD PLAY

[Self-diagnosis Test Mode]

1.Button input diagnosis test mode (TEST6)

.......................FUNCTION + VOLUME

Processes are different depending on destinations at initial settings.

2.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)

CH	BAND	FM
1		FM 87.50 MHz
2		FM108.00 MHz
3	FM	FM 98.00 MHz
4	STEREO	FM 90.20 MHz
5		FM106.00 MHz

CH	BAND	AM
6		AM 531 kHz
7		AM1602 kHz
8	AM	AM 990 kHz
9		AM 612 kHz
10		AM1404 kHz

CH	BAND	FM
16-25
26		FM106.00 MHz
27		FM 90.20 MHz
28	FM	FM 98.00 MHz
29	MONO	FM108.00 MHz
30		FM 87.50 MHz

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

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