Sony HCD-VZ50MD Service Manual page 12

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.
• The following will be displayed :
During recording and stop : Retry cause, number of retries, and number of retry errors.
During playback : Information such as type of disc played, part played, copyright.
These are displayed in hexadecimal.
Procedure:
1. Press the x button and DISPLAY button, CINEMA SPACE button.
2. When the mode is set, "RTs 00c 00e 000" is displayed.
3. Press the MD REC button to start recording. Then press the MD u button and start recording.
4. To check the "track mode", press the MD u button to start play.
5. To exit the test mode, press the @/1 button, and turn OFF the power. When "TOC" disappears, disconnect the power plug from the outlet.
If the test mode cannot be exited, refer to "Forced Reset" on page 12 .
Fig. 1 Reading the Test Mode Display
(During recording and stop)
RTs@@c##c***
Fluorescent indicator tube
@@ : Cause of retry
## : Number of retries
*** : Number of retry errors
Fig. 2 Reading the Test Mode Display
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
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
0 0 0 0 0 20
40
0 0 0 0 0
80
0 0 0 0 0
(During playback)
@@####**$$
Fluorescent indicator tube
@@ : Parts No. (name of area named on TOC)
## : Cluster
** : Sector
$$ : Track mode (Track information such as copyright
information of each part)
Cause of Retry
shock When track jump (shock) is detected
When ADER was counted more than five times continu-
ader5
ously
Discontinuous address
When ADIP address is not continuous
DIN unlock
When DIN unlock is detected
FCS incorrect
When not in focus
IVR rec error
When ABCD signal level exceeds the specified range
CLV unlock When CLV is unlocked
Access fault
When access operation is not performed normally
}
Address (Physical address on disc)
Occurring conditions