XL-HP404 (serv.man13) - Sharp Audio Service Manual (repair manual). Page 10

XL-HP404E/HP404H

2 – 4

(*) CHECKING:

If CD changer mechanism error is detected, 'CHECKING' will be display instead of 'ER-CD**'. 'ER-CD**' display will only be display when error had
been detected for the 5 th times.

In case speaker abnormal detection or +B PROTECTION had occurred, it can be check by pressing 'POWER', '

' and 'X-BASS' button. Micro-

Computer version number will displayed as "U******".

Press ‘VIDEO/AUX’ button during version number display and then press ‘POWER’, ‘MEMORY/SET’ and ‘VIDEO/AUX’ button. Display will show "S**
B**". S is referring to speaker abnormal detection and B is referring to +B PROTECTION. ** is in hex valve.

+B PROTECTION is condition when irregular process occur on power supply line.

BEFORE TRANSPORTING THE UNIT

The following process need to be taken after set tapering/parts replacement.

1. Press the ON/STAND-BY button to enter stand-by mode.

2. While pressing down the 

button and the X-BASS/DEMO button, press the ON/STAND-BY button. The Micro Computer version number will

be displayed as "U******".

3. Press OPEN/CLOSE button until "WAIT"--> "FINISHED" appears.

4. Unplug the AC cord and the unit is ready for transporting.

CD

Pickup Mechanism Error.

'ER-CD01'

PU-IN SW Detection NG.

CD Changer Mechanism Error.

'ER-CD**' (*)

10: CAM SW Detection NG during normal operation
11: CAM SW Detection NG during initialize process
20:TRAY SW Detection NG during normal operation
21:TRAY SW Detection NG during initialize process

CD DSP Communication Error.

'ER-CD31'

DSP COMMUNICATION ERROR.

Focus Not Match/IL Time Over.

'NO DISC'

TUNER

PLL Unlock.

FM

MHz

PLL Unlock.

87.50