Sony MXD-D4 Service Manual page 12

RETRY CAUSE DISPLAY MODE IN MD
• 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.
• The following will be displayed :
During recording and stop : Retry cause, number of retries, and number of retry errors.
During playback
These are displayed in hexadecimal.
Procedure:
1. Load a recordable disc whose contents can be erased into the unit.
[MENU/NO]
2. Press the button. When "Edit Menu" is displayed on the fluorescent indicator tube, turn the
to display "All Erase?".
[YES]
3. Press the button. (Or press the
4. When "All Erase?" is displayed on the fluorescent indicator tube, the music calendar number blinks.
[YES]
5. Press the button to display "Complete!", and press the
[ AMS
the button. (The
l
6. When the "TOC" displayed on the fluorescent display tube goes off, release th
[REC ]
7. Press the z button to start recording. Then press the
8. To check the "track mode", press the
9. Press the / button to display "<MD Test> 5".
?
1
10. To turn the power OFF, turn the
disconnect the power plug from the outlet.
Fig. 1 Reading the Test Mode Display
(During recording and stop)
RTs@@c##e
Fluorescent indicator tube display
@@ : Cause of retry
## : Number of retries
: Number of retry errors
**
Reading the Retry Cause Display
Higher Bits
Hexadecimal
8 4 2
Bit
b7 b6 b5 b4 b3 b2 b1 b0
Binary
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 1
0 1 0
1 0 0
Reading the Display:
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".
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".
12
: Information such as type of disc played, part played, copyright.
[ AMS
l L
]
(MD) knob can be pressed instead of the
L
H (MD) button to start play.
[ AMS ]
l L (MD) knob and when the
**
Lower Bits
Hexa-
1 8 4 2 1
decimal
01
0 0 0 0 1
0 0 0 1 0
02
04
0 0 1 0 0
08
0 1 0 0 0
10
1 0 0 0 0
20
0 0 0 0 0
40
0 0 0 0 0
80
0 0 0 0 0
]
(MD) knob)
x (MD) button immediately. Wait for about 15 seconds while pressing
[YES]
x
X (MD) button and start recording.
[
l
Fig. 2 Reading the Test Mode Display
@@ : Parts No. (name of area named on TOC)
## : Cluster
**
$$ : Track mode (Track information such as copy-
Cause of Retry
shock When track jump (shock) is detected
When ADER was counted more than five times
ader5
continuously
When ADIP address is not continuous
Discontinuous address
When DIN unlock is detected
DIN unlock
When not in focus
FCS incorrect
When ABCD signal level exceeds the specified range
IVR rec error
When CLV is unlocked
CLV unlock
When access operation is not performed normally
Access fault
[ AMS
l
button for the same results)
(MD) button.
AMS ]
L (MD) knob. When "TOC" disappears,
(During playback)
@@ ### $$
**
Fluorescent indicator tube display


Address
: Sector 
right information of each part)
Occurring conditions
]
L (MD) knob