XL-30 (serv.man6) - Sharp Audio Service Manual (repair manual). Page 14

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2. CD Test Mode (TEST 1)
In the CD test mode the operation of each step is enabled even when the LID-SW is off. However, if focus cannot be set in step
3 or any error processing is started, it is impossible to proceed to the next step. When the error processing is started, operations
other than termination of test mode by pressing the POWER button or return to the step 1 by pressing the STOP button are inhibited.

1. Step 1 Mode
When the CD test mode is turned on, the following indication lights, the processing (until turning-off of CD STB terminal of CD
initialization operation flow) is executed, and the next button input is waited.

After lighting for one second

If the following operation buttons are pressed in this state, the operation is performed as follows.

"POWER" ................. The test mode is turned off, the power is turned off, and the ordinary stand-by mode is set.
"FF/FWD" ................. After the pickup returns once to the innermost periphery, it slides toward the outer periphery while this

button is held down.

"REW/REV" .............. After the pickup returns once to the innermost periphery, it slides toward the inner periphery while this

button is pressed. However, if PU-IN is on, input is invalid.

"PLAY" ..................... Shift to step 2
"STOP" ..................... Invalid
"REC PAUSE" .......... Shift to step 5

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

To turn on the specific test mode, press the POWER button, holding down the following two buttons in the ordinary stand-by
mode (power off state). In this case only the main unit button is valid. Even when the POWER of remote control button is set
to on, the test mode is not turned on.
[Ordinary test mode]
1. CD  Test Mode (TEST 1)…………………… Volume/JOG Dial Selector + FF/FWD
2. Tuner Test Mode (TEST 2)………………… Volume/JOG Dial Selector + Volume Select
3. Electronic volume Test Mode (TEST 3)…… REW/REV + FF/FWD
4. Timer Test Mode (TEST 4)………………… FUNCTION + Volume Select
5. LCD Test Mode (TEST 5)…………………… FUNCTION + FF/FWD

REW/REV + Volume Select

[Self-diagnosis Test Mode]

1.  Button input diagnosis test mode (TEST6).…

• Setting the Test Mode (For XL-30H)
Keeping the FF/FWD button and MEMORY/SET button
pressed, turn on POWER. Then, the frequency is initially set
in the memory as shown in Table. Call it with the JOG DIAL
knob to use it for adjustment and check of tuner circuit.

1

87.50 MHz

2

108.00 MHz

3

98.00 MHz

4

90.00 MHz

5

106.00 MHz

11~25

––––

• Setting the Test Mode (For XL-30W)
Keeping the FF/FWD button and MEMORY button pressed,
turn on POWER. Then, the frequency is initially set in the
memory as shown in Table. Call it with the Jog volume button
by pressing the VOLUME/JOG button to use it for adjustment
and check of tuner circuit.

1

87.50 MHz

6

531 kHz

2

108.00 MHz

7

1,602 kHz

3

98.00 MHz

8

990 kHz

4

90.00 MHz

9

603 kHz

5

106.00 MHz

10

1,404 kHz

11~25

26

106.00 MHz

27

90.00 MHz

28

98.00 MHz

29

108.00 MHz

30

87.50 MHz

6

522 kHz

7

1,620 kHz

8

990 kHz

9

603 kHz

10

1,404 kHz

26

106.00 MHz

27

90.00 MHz

28

98.00 MHz

29

108.00 MHz

30

87.50 MHz