Aiwa AM-LM918, Руководство по обслуживанию, Страница: 8 / 36

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MD TEST MODE
The following shows the contents of the test mode.
1. How to Activate MD Test Mode
2. MD Test Mode and Audio Output Check
3. How to Cancel MD Test Mode
4. How to Change to Servo Standby Mode
5. Sled Feed Operation Check
6. Laser Power Check
7. Loading Mechanism Operation and Detection Switch Check
8. Servo Operation Check
8-1 Focus Search/Spindle Kick Check 1
8-2 Focus Search/Spindle Kick Check 2 (S curve check)
8-3 Focus Servo and Sled Error (EF Balance) Check
8-4 All Servo On Check
9. Address, Error Rate Check
10. How to Erase U-TOC (User TOC)
1. How to Activate MD Test Mode
While pressing and holding the “PLAY” button on the MD section, insert the AC plug into the outlet.
* Notes: 1) The button operation in test mode is basically performed at MD section but it can also be done at TUNER section, AMP section and
CD section. The remote controller is also required for the adjustments.
2) During test mode activation, perform the operation and any mechanical error is ignored. If an unusual error occurs in the operation,
switch off the power immediately.
3) During test mode operation, normal recording/playback will not be working.
2. MD Test Mode and Audio Output Check
1) After activating test mode, the display will be as shown in the diagram below, indicating that test mode can be used.
2) Audio Output Check
The signal of 1kHz, –17dB (140mV) is the output from the MD mechanical output (D/A OUT).
(It cannot output from the speaker output and headphone output.)
3. How to Cancel MD Test Mode
1) Press the “MD EJECT” button and take out the DISC.
2) Remove the AC plug.
* Note: If the MD test mode is cancelled without using the above steps, the unit may not be able to operate properly when power is switched on
again. If this occurs, remove the AC plug.
4. How to Change to Servo Standby Mode
After activating the test mode, press the “STOP” button to change to Servo Standby mode.
Various modes are able to switch from this mode (display shows “ALL SV OFF”).
Press the “STOP” button in each mode operation to return to “ALL SV OFF” that is returns to the original display.
5. Sled Feed Operation Check
In “ALL SV OFF”, press the “B.SKIP” or “F.SKIP” button to move the lens and PICK UP to outer or inner track respectively.
PICK UP moves to the inner most track and the “JAZZ” lights up when “INSIDE LIMIT SW” is pressed.
* Make sure that checking is in loading mode because the range of movement allowable for PICK UP is restricted when unloading.
PICK UP moves to outer track. PICK UP moves to inner track