Sony MDS-JA333ES Service Manual ▷ View online
9
[Checks before Part Replacement and Adjustment]
Cause of faulty can be approximately located by performing the following checks before starting the repair work. Refer to Section “5.
Electrical Adjustment” the check procedure.
Electrical Adjustment” the check procedure.
Note: The judgment criterion is shown for the purpose of judging if the performance is acceptable or not. This is not the specification value for adjustment.
Use the specification value for adjustment when the MDS-JA333ES is going to be adjusted.
Laser power check
(Refer to section 5-6-2.)
(Refer to section 5-6-2.)
Traverse check
(Refer to section 5-6-3.)
(Refer to section 5-6-3.)
Focus bias check
(Refer to section 5-6-4.)
(Refer to section 5-6-4.)
C PLAY check
(Refer to section 5-6-5.)
(Refer to section 5-6-5.)
Self record/playback check
(Refer to section 5-6-6.)
(Refer to section 5-6-6.)
Temperature compensation
offset check
(Refer to section 5-6-1.)
offset check
(Refer to section 5-6-1.)
Judgment criterion(NG when the measurement
value is out of the specification value)
• 0.9 mW power
Specification value: 0.8 to 0.96 mW
• 6.2 mW power
Specification value: 6.0 to 6.4 mW
• Iop (when 7 mW)
The Iop value that is shown on the optical
pick-up: +/- 4 mA
pick-up: +/- 4 mA
• Traverse waveform
Specification value: Offset 5% or less
• Checking the error rate
Specification value: All points of a and b
CI error 220 or less
AD error 2 or less
CI error 220 or less
AD error 2 or less
• Checking the error rate
Specification value:
a. When using the test disc (MDW-74/AU-1)
CI error 50 or less
AD error 2 or less
b. When using the check disc (TDYS-1)
CI error 20 or less
a. When using the test disc (MDW-74/AU-1)
CI error 50 or less
AD error 2 or less
b. When using the check disc (TDYS-1)
CI error 20 or less
• Checking the error rate in C PLAY
Specification value:
CI error 50 or less
AD error 2 or less
CI error 50 or less
AD error 2 or less
• NG when “T=@@(##)(NG” appears
(@@ and ## are arbitrary numbers.)
Remedial measure in case of NG
• Cleaning the optical pick-up
• Readjustment
• Replacing the optical pick-up
• Readjustment
• Replacing the optical pick-up
• Replacing the optical pick-up
• Replacing the optical pick-up
• Replacing the optical pick-up
• Replacing the optical pick-up
In case of NG all the time:
• Replacing the overwrite head
• Check disconnection of the circuits around
• Replacing the overwrite head
• Check disconnection of the circuits around
the overwrite head
In case of intermittent NG:
• Check deformation of overwrite head
• Check mechanism around the sled
• Check deformation of overwrite head
• Check mechanism around the sled
• Check disconnection of the circuits around
the D101 (BD board)
• Check signals around the IC101, IC121,
CN102 and CN103 (BD board)
10
Reading the Display:
Convert the hexadecimal display of each digit into binary display. If more than two causes, they will be added.
Example When 42 is displayed:
Higher bit: 4 = 0100
→
b6
Lower bit: 2 = 0010
→
b1
In this case, the retry cause is combined of “CLV unlock” and “ader5”.
Example When A2 is displayed:
Higher bit: A = 1010
→
b7+b5
Lower bit: 2 = 0010
→
b1
In this case, the retry cause is combined of “Access fault”, “IVR rec” and “ader5”.
The reading of the track mode display is as follows.
[Retry Cause Display Mode]
•
In this test mode, the retry causes of the MDS-JA333ES during record and stop modes can be displayed on the fluorescent display tube.
This mode becomes the “track mode” during playback in which the track information is available.
This mode is useful for locating the defective area of the MDS-JA333ES.
This mode becomes the “track mode” during playback in which the track information is available.
This mode is useful for locating the defective area of the MDS-JA333ES.
•
The contents to be displayed are as follows.
During record and stop modes: Retry cause, number of retries, and number of retry errors
During playback mode: Information such as disc types under playing back, position of playback and copyright.
Each information is displayed in hexadecimal number.
During record and stop modes: Retry cause, number of retries, and number of retry errors
During playback mode: Information such as disc types under playing back, position of playback and copyright.
Each information is displayed in hexadecimal number.
Procedure:
1. Load a recordable disc whose contents can be erased, into the MDS-JA333ES.
2. Press the MENU/NO button. After the message “Edit Menu” appears on the fluorescent display tube, rotate the lAMSL knob
2. Press the MENU/NO button. After the message “Edit Menu” appears on the fluorescent display tube, rotate the lAMSL knob
until the message “All Erase ?” appears.
3. Press the YES button. (Alternately the lAMSL knob can also be pressed.)
4. The message “All Erase ?” appears on the fluorescent display tube. Then the numerals on the music calendar flash.
5. Press the YES button, then the message “Complete !” appears. Press the x button immediately, and wait for about 15 seconds while
4. The message “All Erase ?” appears on the fluorescent display tube. Then the numerals on the music calendar flash.
5. Press the YES button, then the message “Complete !” appears. Press the x button immediately, and wait for about 15 seconds while
keeping pressing the button. (Alternately the lAMSL knob can be pressed instead of YES button.)
6. When the characters “TOC” have disappeared from the fluorescent display tube, remove your hands from the x button.
7. Press the zREC button to enter the record standby mode. Then press the X button to start recording.
8. When you want to enter the “Track mode”, press the N button to start playback.
9. To exit the test mode, press the ?/1 button. The message “TOC” flashes, the MDS-JA333ES enters the standby mode and exits the test
7. Press the zREC button to enter the record standby mode. Then press the X button to start recording.
8. When you want to enter the “Track mode”, press the N button to start playback.
9. To exit the test mode, press the ?/1 button. The message “TOC” flashes, the MDS-JA333ES enters the standby mode and exits the test
mode.
Fig. 1 Reading the Test Mode Display (During record and stop modes)
RTs@@c##e**
Display on the fluorescent display tube
Display on the fluorescent display tube
@@ : Cause of retry
##
##
: Number of retries
**
: Number of retry errors
Fig. 2 Reading the Test Mode Display (During playback)
@@ ####** $$
Display on the fluorescent display tube
Display on the fluorescent display tube
@@ : Parts No. (Area name that is given on the TOC)
##
##
: Cluster address (physical address on the disc)
**
: Sector
$$
: Track mode (track information such as copyright information of each part, etc.)
How to read the retry cause display:
Hexadecimal
Bit
Binary number
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
Hexadecimal Name of retry cause
When 1
01
02
04
08
10
20
40
80
shock
ader5
Address is not continuous
DIN unlock
FCS unlock
IVR rec error
CLV unlock
Access fault
When track jump (shock) is detected
When ADER is counted five times or more continuously
When ADIP address is not continuos
Detects DIN unlock is detected
When focus is unlocked
When signal level of the ABCD signal exceeds the specified range
When CLV is unlocked
When access operation is not performed normally
11
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 Display:
Convert the hexadecimal display of each digit into binary display. The several causes are added and displayed.
Example When 84 is displayed:
Higher bit: 8 = 1000
→
b7
Lower bit: 4 = 0100
→
b2
This example shows that “Emphasis: OFF”, “Monaural”, “Original”, “Copyright exists” and “Writing is allowed” because b2 and b7 are 1
while all other bits are 0.
while all other bits are 0.
Example When 07 is displayed:
Higher bit: 0 = 0000
→
all 0
Lower bit: 7 = 0111
→
b0+b1+b2
This example shows that “Emphasis: ON”, “Stereo”, “Original”, “Copyright exists” and “Writing is prohibited” because b0, b1 and b2 are
1 while all other bits are 0.
1 while all other bits are 0.
Hexadecimal
→
Binary Conversion Table
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
Hexadecimal
Bit
Binary
Hexa-
decimal
01
02
04
08
10
20
40
80
Details
When 0
Emphasis OFF
Monaural
This is 2-bit display. Normally 01.
01:Normal audio. Others:Invalid
Audio (Normal)
Original
Copyright exists
Write prohibited
When 1
Emphasis ON
Stereo
Invalid
Digital copy
No copyright
Write is allowed
12
This section is extracted
from instruction manual.
from instruction manual.
SECTION 2
GENERAL
1
?/1
(power) switch/STANDBY indicator (14) (23)
Press 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 (10)
Point the remote toward this sensor (
g) for remote
operations.
3
FILTER button (43)
Press to select the type of the digital filter.
4
S.F EDIT button (38)
Press to change the recorded level after recording.
5
PLAY MODE button (27) (42)
Press to select Shuffle Play or Program Play or resume
normal play.
normal play.
6
REPEAT button (26)
Press to play tracks repeatedly.
7
TIME button (18) (22)
Press to display the remaining time.
8
DISPLAY/CHAR button (9) (15) (17) (24) (27) (35)
Front panel description
Press while the deck is
Recording or recording
pause
pause
Stopped
Recording
Playing
Editing
To
Adjust the recording level
Display disc information or
the contents of a program
Display information on the
track being recorded
Display information on the
current track
Select the type of characters
to be input
the contents of a program
Display information on the
track being recorded
Display information on the
current track
Select the type of characters
to be input
w;
REC MODE selector (16)
Use to set the REC MODE to STEREO, MONO, LP2
or LP4.
or LP4.
wa
INPUT selector (14)
Use to select the input jack (or connector) of the
program source to be recorded.
program source to be recorded.
ws
PHONE LEVEL control (23)
Turn to adjust the volume of the headphones.
wd
PHONES jack (23)
Connect headphones to this jack.
wf
TIMER selector (42)
Use to set the timer for recording (REC) or playing
(PLAY). Set to OFF to turn off the timer.
(PLAY). Set to OFF to turn off the timer.
9
Display window (8)
Shows various information.
0
CLEAR button (27) (35)
Press to cancel the selection.
qa
MENU/NO button (19) (27) (30) (39) (52)
Press to display the Edit Menu or Setup Menu.
qs
AMS control (12) (14) (23) (30) (39)
Turn to locate tracks, set the clock, select the input
characters, or select a menu item and a setting value.
characters, or select a menu item and a setting value.
qd
YES button (18) (27) (30) (39)
Press to carry out the selected operation.
qf
DIGITAL REC LEVEL control (17)
Turn to adjust the digital recording level.
qg
ANALOG REC LEVEL L/R control (18)
Turn to adjust the analog recording level.
With the arrow
pointing toward
the deck
With the labeled side up
ws
w;
wd
wf
wa
9
qh
qk
qj
ql
qs
qa
qd
qf
qg
78
34 5 6
2
1
q;
qh
OPEN/CLOSE A button (14) (23)
Press to insert or eject the MD.
N
N
button (14) (23)
Press to start play.
X
X
button (14) (23)
Press to pause play or recording. Press again to resume
play or recording.
x
play or recording.
x
button (15) (23)
Press to stop play or recording, or cancel the selected
operation.
z
operation.
z
button (14) (18) (19)
Press to record to the MD, monitor the input signal, or
mark track numbers.
mark track numbers.
qj
m / M
buttons (25) (27) (30) (35)
Press to locate a portion within a track, change the
contents of a program, or change the input character.
contents of a program, or change the input character.
qk
MDLP indicator (16) (23)
Lights when the deck is playing or recording to an MD
in LP2 or LP4 Stereo mode.
in LP2 or LP4 Stereo mode.
ql
MD disc tray (14) (23)
Insert an MD as illustrated below.
Click on the first or last page to see other MDS-JA333ES service manuals if exist.