Test Mode; Precautions For Use Of Test Mode; Selecting The Test Mode; Setting The Test Mode - Sony HCD-MD515 - Component For Dhcmd515 Service Manual

4-1. PRECAUTIONS FOR USE OF TEST MODE

1. The erasing-protection tab is not detected in the test mode.
Therefore, operating in the recording laser emission mode and
pressing the REC/CD-MD SYNC button, the recorded con-
tents will be erased regardless of the position of the tab. When
using a disc that is not to be erased in the test mode, be careful
not to enter the continuous recording mode and traverse adjust-
ment mode.
But "CREC MODE", "EF MO CHECK" and "EF MO AD-
JUST" is detect the erasing-protection tab and recording laser
power off.
2. Using MD slot is "DISC 1" only.
4-1-1. Recording Laser Emission Mode and Operating
Button
1. Continuous recording mode (CREC MODE)
2. Traverse adjustment mode (EF MO ADJUST)
3. Laser power adjustment mode (LDPWR ADJUST)
4. Laser power check mode (LDPWR CHECK)
5. When pressing the REC/CD-MD SYNC button.
6. Traverse checking mode (EF MO CHECK)

4-2. SETTING THE TEST MODE

1. Turn on the set, and select the MD function.
2. Place the MD in "NO DISC" status (No disc present in stocker
and inside of set)
3. Press DBFB button, DIMMER button, and MD6 button si-
multaneously to activate the Test mode.
When the Test mode is activated. "TEMP ADJUST" is dis-
played on fluorescent indicator tube.
4-3. LOADING/UNLOADING A DISC IN TEST MODE
1. In the Test mode, use the slot 1 only. (Do not load a disc in
other slots.)
2. When a disc is loaded in slot 1, in several seconds it will be
automatically pulled in.
3. To unload a disc, press MD6 button .
4. To load a disc again, press MD6 button .
5. In the Test mode, MD1, 2, 3 LEDs do not light regardless of
whether a disc is present or not.
4-4. RELEASING THE TEST MODE
Press the REPEAT button, and the set returns to normal mode.
(If REPEAT button is pressed with a disc loaded, the disc is au-
tomatically ejected.)
4-5. BASIC OPERATIONS OF THE TEST MODE
All operations are performed using the MULTI JOG dial,
ENTER/YES button, and EDIT/NO button. The functions of
these buttons and dial are as follows.
Table 1.
Button & dial
MULTI JOG dial Changes parameters and modes.
Proceeds onto the next step.
ENTER/YES button
Finalizes input.
Returns to previous step.
EDIT/NO button
Stops operations.
SECTION 4

TEST MODE

Function
– 21 –

4-6. SELECTING THE TEST MODE

Twenty six test modes are selected by turn the MULTI JOG dial.
Table 2.
Display
TEMP CHECK Temperature compensation offset check
LDPWR CHECK Laser power check
EF MO CHECK Traverse (E-F balance) check
EF CD CHECK Travers (Pre mastered disk) check
FBIAS CHECK Focus bias check
CPLAY MODE Continuous playback mode
CREC MODE Continuous recording mode
Scurve CHECK S-curve check (*1)
VERIFY MODE Non-volatile memory check (*1)
DETRK CHECK Detrack check
TEMP ADJUST Temperature compensation offset adjustment
LDPWR ADJUST Laser power adjustment
EF MO ADJUST Traverse (E-F balance) adjustment
EF CD ADJUST Traverse (Pre mastered disk) adjustment
FBIAS ADJUST Focus bias adjustment
EEP MODE Non-volatile memory mode (*1)
MANUAL CMD Manual command transfer mode (*1)
SVDATA READ Data reading out mode (*1)
ERR DP MODE Operation of error histories memory
SLED MOVE Operation of sled motor (*1)
ACCESS MODE Access check (*1)
0920 CHECK Outermost periphery check (*1)
WRITE sure? Non-volatile memory initialize (*1)
HEAD ADJUST HEAD adjustment check (*1)
CPLAY2MODE Continuous playback mode (*1)
CREC2MODE Continuous recording mode (*1)
• For detailed description of each adjustment mode, refer to the "5.
ELECTRICAL ADJUSTMENTS" (page 24).
• If a different adjustment mode has been selected by mistake, press
the EDIT/NO button to exit from it.
*1: Scurve CHECK, VERIFY CHECK, EEP MODE, MANUAL
CMD, SVDATA READ, SLED MOVE, ACCESS MODE, 0920
CHECK, Write sure?, HEAD ADJUST, CPLAY2MODE, and
CREC2MODE are not used in servicing. If set accidentally,
press the POWER button immediately to exit it.
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