Sony MDS-LSA1 Service Manual ▷ View online
9
CHECKS PRIOR TO PARTS REPLACEMENT AND ADJUSTMENTS
Before performing repairs, perform the following checks to determine the faulty locations up to a certain extent.
Details of the procedures are described in “5 Electrical Adjustments”.
Details of the procedures are described in “5 Electrical Adjustments”.
• 5-6-2. Laser power check (see page 33)
• 5-6-3. Iop Compare (see page 33)
• 5-6-4. Auto Check (see page 34)
• 5-6-3. Iop Compare (see page 33)
• 5-6-4. Auto Check (see page 34)
Note:
The criteria for determination above is intended merely to determine if satisfactory or not, and does not serve as the specified value for
adjustments.
When performing adjustments, use the specified values for adjustments.
adjustments.
When performing adjustments, use the specified values for adjustments.
FORCED RESET
The system microprocessor can be reset in the following procedure.
Use these procedure when the unit cannot be operated normally due to the overrunning of the microprocessor, etc.
Procedure :
Use these procedure when the unit cannot be operated normally due to the overrunning of the microprocessor, etc.
Procedure :
1. Disconnect the short-circuit pin of CN201.
2. Disconnect the AC outlet.
3. After some time, connect AC power plug to the AC outlet again.
4. Connect the short-circuit pin of CN201.
2. Disconnect the AC outlet.
3. After some time, connect AC power plug to the AC outlet again.
4. Connect the short-circuit pin of CN201.
[MAIN BOARD] (SIDE A)
CN201
10
RETRY CAUSE DISPLAY MODE
• In this test mode, the causes for retry of the unit during recording can be displayed on the fluorescent indicator tube. During playback, the
“track mode” for obtaining track information will be set.
This is useful for locating the faulty part of the unit.
This is useful for locating the faulty part of the unit.
• The following will be displayed :
During recording and stop : Retry cause, number of retries, and number of retry errors.
During playback
During playback
: Information such as type of disc played, part played, copyright.
These are displayed in hexadecimal.
Procedure:
1. Press the x button continuously for about 10 seconds.
2. When the mode is set, “RTs 00c 00e 00” is displayed.
3. Set a recortable disc in the unit.
4. Press the z REC button to start recording. Then press the 7 button and start recording.
1. Press the x button continuously for about 10 seconds.
2. When the mode is set, “RTs 00c 00e 00” is displayed.
3. Set a recortable disc in the unit.
4. Press the z REC button to start recording. Then press the 7 button and start recording.
Note: A recording source is required for starting recording. Connect and play other devices, and set as the recording source.
5. To check the “track mode”, press the 7 button to start play.
6. To exit the test mode, disconnect the power plug from the outlet. If the test mode cannot be exited, refer to “Forced Reset” on page 9.
6. To exit the test mode, disconnect the power plug from the outlet. If the test mode cannot be exited, refer to “Forced Reset” on page 9.
Fig. 1 Reading the Test Mode Display
(During recording and stop)
(During recording and stop)
RTs@@c##e**
Fluorescent display tube display
Hexadecimal
Bit
Binary
Higher Bits
Lower Bits
8
4
2
1
8
4
2
1
b7 b6 b5 b4 b3 b2 b1 b0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
0
When track jump (shock) is detected
When ADER was counted more than five times continu-
ously
When ADIP address is not continuous
When DIN unlock is detected
When not in focus
When ABCD signal level exceeds the specified range
When CLV is unlocked
When access operation is not performed normally
Hexa-
decimal
shock
ader5
Discontinuous address
DIN unlock
FCS incorrect
IVR rec error
CLV unlock
Access fault
Cause of Retry
Occurring conditions
01
02
04
08
10
20
40
80
@@ : Cause of retry
##
##
: Number of retries
**
: Number of retry errors
Reading the Display:
Convert the hexadecimal display into binary display. If more than two causes, they will be added.
Convert the hexadecimal display into binary display. If more than two causes, they will be added.
Example
When 42 is displayed:
Higher bit : 4 = 0100 t b6
Lower bit : 2 = 0010 t b1
In this case, the retry cause is combined of “CLV unlock” and “ader5”.
Higher bit : 4 = 0100 t b6
Lower bit : 2 = 0010 t b1
In this case, the retry cause is combined of “CLV unlock” and “ader5”.
When A2 is displayed:
Higher bit : A = 1010 t b7+b5
Lower bit : 2 = 0010 t b1
The retry cause in this case is combined of “Access fault”, “IVR rec error”, and “ader5”.
Higher bit : A = 1010 t b7+b5
Lower bit : 2 = 0010 t b1
The retry cause in this case is combined of “Access fault”, “IVR rec error”, and “ader5”.
Reading the Retry Cause Display
Fig. 2 Reading the Test Mode Display
(During playback)
(During playback)
@@ ###** $$
Fluorescent display tube display
@@ : Parts No. (name of area named on TOC)
### : Cluster
**
### : Cluster
**
: Sector
$$
: Track mode (Track information such as copyright infor-
mation of each part)
} Address (Physical address on disc)
11
Hexadecimal
Bit
Binary
Higher Bits
Lower Bits
8
4
2
1
8
4
2
1
b7 b6 b5 b4 b3 b2 b1 b0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
0
Hexa-
decimal
Details
01
02
04
08
10
20
40
80
Emphasis OFF
Monaural
This is 2-bit display. Normally 01.
01:Normal audio. Others:Invalid
Audio (Normal)
Original
Copyright
Write prohibited
When 0
When 1
Emphasis ON
Stereo
Invalid
Digital copy
No copyright
Write allowed
Reading the Display:
Convert the hexadecimal display into binary display. If more than two causes, they will be added.
Convert the hexadecimal display into binary display. If more than two causes, they will be added.
Example When 84 is displayed:
Higher bit : 8 = 1000 t b7
Lower bit : 4 = 0100 t b2
In this case, as b2 and b7 are 1 and others are 0, it can be determined that the retry cause is combined of “Emphasis OFF”, “Monaural”,
“Original”, “Copyright exists”, and “Write allowed”.
Lower bit : 4 = 0100 t b2
In this case, as b2 and b7 are 1 and others are 0, it can be determined that the retry cause is combined of “Emphasis OFF”, “Monaural”,
“Original”, “Copyright exists”, and “Write allowed”.
Example When 07 is displayed:
Higher bit : 0 = 1000 t All 0
Lower bit : 7 = 0111 t b0+b1+b2
In this case, as b0, b1, and b2 are 1 and others are 0, it can be determined that the retry cause is combined of “Emphasis ON”, “Stereo”,
“Original”, “Copyright exists”, and “Write prohibited”.
Lower bit : 7 = 0111 t b0+b1+b2
In this case, as b0, b1, and b2 are 1 and others are 0, it can be determined that the retry cause is combined of “Emphasis ON”, “Stereo”,
“Original”, “Copyright exists”, and “Write prohibited”.
Hexadecimal
t
Binary Conversion Table
Hexadecimal
Binary
Hexadecimal
Binary
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
Reading the Track Mode Display
12
SECTION 2
GENERAL
4
GB
Location and
Function of
Parts
Function of
Parts
This chapter tells you about the
location and function of the various
buttons and contr ols on the front
panel and the supplied remote.
Further details ar e pr ovided on the
pages indicated in the parentheses.
It also tells you about the information
that appears in the display window .
location and function of the various
buttons and contr ols on the front
panel and the supplied remote.
Further details ar e pr ovided on the
pages indicated in the parentheses.
It also tells you about the information
that appears in the display window .
Front Panel Parts
Descriptions
Descriptions
1
~/1
(power) switch (12, 21)
Pr ess to turn on the deck. When you turn on the deck,
the STANDBY indicator turns off. When you press the
switch again, the deck turns off and the indicator
lights up.
the STANDBY indicator turns off. When you press the
switch again, the deck turns off and the indicator
lights up.
2
Remote sensor
Point the remote towar ds this sensor ( ) for remote
operations.
operations.
3
LP indicator (15)
Lights up when LP2 or LP4 mode is selected, or when
a track recor ded in LP2 or LP4 mode is being played.
a track recor ded in LP2 or LP4 mode is being played.
4
H.A.T.S. indicator
Lights up when the H.A.T .S. function is activated on
the receiver .
the receiver .
z
What is the H.A.T.S. function?
The H.A.T .S. (High-quality digital Audio Transmission
System) function on the receiver causes digital audio signals
output from an MD deck or the recor ding sour ce (e.g., a CD
player) to be momentarily stor ed in a buffer in the receiver
prior to output. This r educes jitter that sometimes occurs
during digital audio transmission.
5
DISPLAY button (9, 13, 16, 20, 21)
• Press when the deck is stopped to display disc
information.
• Press during recor ding to display information on the
track being recor ded or recor dable time on the MD.
• Press during play to display information on the
current track.
• Press during Programme Play to display the number
of the track curr ently being played in the
pr ogramme.
pr ogramme.
• Press during recording or recor ding pause to adjust
the recor ding level.
5
GB
1 2
3 4
5 6
7
qh
qg
qf
qd
qs
8
9
0
qa
ST
ANDBY
LP
H.A.T
.S
INPUT
DISPLA
Y
REC
MODE
HIGH
SPEED
CD
SYNCHR
O
RE
C
.
>
?/1
A
x
z
6
Display window (8, 16, 32, 35)
Shows various information.
For details, see “Display
Window Descriptions” on page 8.
7
MD insertion
slot (12, 21)
Insert the MD as illustrated below .
x
A
.
>
z
8
A
button (12, 21)
Pr ess to eject the MD.
9
HX
button (12, 19, 21, 22)
• Press when the deck is stopped to start play .
• Press during playback to pause play .
• Press during recor ding to pause recor ding.
• Press during playback pause or recor ding pause to
• Press during playback to pause play .
• Press during recor ding to pause recor ding.
• Press during playback pause or recor ding pause to
resume play or recor ding.
q;
x
button (12, 20, 21)
Pr ess to stop play or recor ding, or cancel the selected
operation.
operation.
qa
./>
buttons (12, 15, 16, 19, 21, 22)
Pr ess to locate tracks or select a menu item and a
setting value.
setting value.
qs
REC
z
button (12, 17)
Pr ess to recor d on the MD or mark track numbers.
qd
CD SYNCHRO button (19)
Pr ess to start CD Synchr o-recor ding.
With the labelled
side up
side up
With the arrow
pointing towards
the deck
pointing towards
the deck
qf
HIGH SPEED indicator (20)
Lights up when the deck is in High-speed CD
Synchr o-recor ding mode.
Synchr o-recor ding mode.
qg
REC MODE button (15)
Press to select one of the following four recording
modes: MONO mode (monaural recor ding), stereo
mode (ster eo recor ding), LP2 mode (2 times long
recor ding), and LP4 mode (4 times long recor ding).
modes: MONO mode (monaural recor ding), stereo
mode (ster eo recor ding), LP2 mode (2 times long
recor ding), and LP4 mode (4 times long recor ding).
qh
INPUT button (12)
Press once to display the selected programme source.
If the pr ogramme sour ce is either the STR-LSA1 or the
CDP-LSA1, “N N n n” appears momentarily
in the display window of the component.
If the pr ogramme sour ce is either the STR-LSA1 or the
CDP-LSA1, “N N n n” appears momentarily
in the display window of the component.
Press the
button again to switch to another programme source.
This section is e
xtracted from
instr
uction man
ual.
Click on the first or last page to see other MDS-LSA1 service manuals if exist.