Test Mode; Caution When Using The Test Mode; Test Mode Settings; Releasing The Test Mode - Sony ZS-M50 Service Manual

4-1. CAUTIONS WHEN USING THE TEST MODE
1 Check to make sure the inserted disk is completed stopped be-
fore removing since loading related operations will operate re-
gardless of the Test mode operation.
The rotation of the inserted disk will not stop even when press-
ing the MD EJECT button during continuous playback and con-
tinuous recording.
In this case, the disk will be ejected while still in motion.
Always press the NO/CANCEL button and check to see that
the disk has stopped turning before pressing the MD EJECT
button.
2 In the Test mode, detection of the write-protect tab is not ex-
ecuted. For this reason, pressing the REC button in modes where
the recording laser is emitted (see 4-1-1) will delete the recorded
contents regardless of the tab position. When using a disk in the
Test mode which its contents must not be deleted, avoid enter-
ing the Continuous Recording mode and Traverse Adjustment
mode.
4-1-1. Modes which the record laser is emitted and
button operations
• Continuous Recording mode (CREC MODE)
• Traverse Adjustment mode (EFBAL ADJUST)
• Laser Power Adjustment mode (LDPWR ADJUST)
• Laser Power Check mode (LDPWR CHECK)
• Traverse (MO) check (EF MO CHECK)
• Traverse (MO) adjustment (EF MO ADJUST)
• When pressing the REC button

4-2. TEST MODE SETTINGS

MD Test mode :
Press and hold the EDIT button and BASS/TREBLE button,
then press MD ^ n MD p n MD ^ n MD p.
CD Test mode :
Press and hold the EDIT button and BASS/TREBLE button,
then press CD ^ n CD p n CD ^ n CD p.
Display Test mode :
Press and hold the EDIT button and BASS/TREBLE button,
then press BAND n LINE n BAND n LINE (FUNCTION
is LINE).
Each test mode can be entered regardless of whether the
Note 1 :
power is on or off. However, it is not possible to enter the
test mode of the particular function being operated. For
example, it its not possible to enter the CD Test mode when
the CD is in function
.

4-3. RELEASING THE TEST MODE

Press the RESET button located on the bottom.

4-4. BASIC OPERATIONS OF THE TEST MODE

All operations are made using the AMS dial, YES/ENTER button
and NO/CANCEL button.
The functions of each button are as follows:
Function Name
AMS dial Used to change parameters and modes
YES/ENTER button Used to advance and confirm
NO/CANCEL button Used to return and cancel
SECTION 4

TEST MODE

Functions
– 19 –

4-5. SELECTING THE TEST MODE

There are 9 types of test modes (see table below). Turning the AMS
dial clockwise switches modes shown in the table in the order from
top to bottom. Turning the AMS dial counterclockwise switches
modes shown in the table in the reverse order.
Display
TEMP ADJUST Temperature compensation offset adjustment
LDPWR ADJUST Laser power adjustment
LDPWR CHECK Laser power check
EF BAL ADJUST Traverse adjustment
FBIAS ADJUST Focus bias adjustment
FBIAS CHECK Focus bias check
CPLAY MODE Continuous playback mode
CREC MODE Continuous recording mode
EEP MODE Non-volatile storage memory control
• For details on each adjustment mode, see respective items of SEC-
TION 5. ADJUSTMENT
• If you have accidently entered another mode, press the NO/CAN-
CEL button to exit.
• The EEP MODE is not used during servicing. Thus, details on
this mode are not given. If this mode is accidently entered, exit
immediately by pressing the NO/CANCEL button as the unit may
not operate correctly if the non-volatile storage memory being
overwritten.
4-5-1. Operating in the Continuous Playback mode
1. Entering the Continuous Playback mode
1 Insert a disk into the unit (either recordable or playback disk)
2 Turn the AMS dial until "CPLAY MODE" is displayed.
3 Press the YES/ENTER button. The display will change to
"CPLAY IN".
4 When accessing is completed, the display will change to "C1=
AD = ".
Note : The numbers of " " displayed indicate the error rate and
"ADER".
2. Changing the playback location
1 Pressing the YES/ENTER button during continuous playback
will change the display in the following manner, enabling
change in the playback location.
"CPLAY MID" n "CPLAY OUT" n "CPLAY IN"
↑
2 When accessing is completed, the display will change to "C1=
AD = ".
The numbers of " " displayed indicate the error rate and
Note :
"ADER".
3. Exiting the Continuous Playback mode
1 Press the NO/CANCEL button. The display will change to
"CPLAY MODE".
2 To remove the disk, press the MD EJECT button.
Note :
The playback initiate addresses of IN, MID and OUT are indi-
cated below. To display the playback position, press the DIS-
PLAY button and "CPLAY(
IN 40h cluster
MID 300h cluster
OUT 700h cluster
Description
)".