Sony DHC-EX77MD / DHC-MD77 / MDS-EX77 / MDS-EX770 Service Manual ▷ View online
– 5 –
1-4. RETRY CAUSE DISPLAY MODE AT RECORD
Outline:
•
In this mode, a cause of retry at recording can be displayed.
Thus, it will help find out a faulty location of the set.
Thus, it will help find out a faulty location of the set.
•
The contents displayed are data quantity stored in D-RAM, re-
try count, and retry cause. There are displayed with hexadeci-
mal numbers.
try count, and retry cause. There are displayed with hexadeci-
mal numbers.
•
From the data quantity in D-RAM, whether data writing, read-
ing, storing, and ejection are executed smoothly can be con-
firmed. If data writing failed, data quantity will be extremely
small.
ing, storing, and ejection are executed smoothly can be con-
firmed. If data writing failed, data quantity will be extremely
small.
Operating Method:
1. With the power turned on, load a disc (use a disc for recording
1. With the power turned on, load a disc (use a disc for recording
of which contents may be erased).
2. Press the EDIT/NO button, and “ALL Erase?” is displayed.
3. Press the ENTER/YES button, and a message changes to
3. Press the ENTER/YES button, and a message changes to
“ALL Erase??” and numbers in music calendar blink.
4. Press the ENTER/YES button, and “Complete” is displayed.
5. When “Complete” appears, immediately keep pressing the
5. When “Complete” appears, immediately keep pressing the
p
button for about 10 seconds.
6. When “TOC” on display disappears, release the
p button.
7. Press the
r REC button to start recording.
8. Press the DISPLAY/CHARACTER button, and the display
will changes as follows:
SC
Rt
Data quantity in
D-RAM is displayed
at all times.
D-RAM is displayed
at all times.
Retry cause is
displayed.
displayed.
Retry count is displayed.
A numerical returns to 0 if retry
error occurred.
A numerical returns to 0 if retry
error occurred.
Note: These three kinds of displays are all made with hexadeci-
mal numbers.
9. Though Rt value increments each time retry is made, if an
error occurred, “Retry Error” is displayed and retry count re-
turns to 0.
turns to 0.
10. To exit from this mode, turn off the TA-EX77 (pre/main am-
plifier) and after “TOC” display disappeared, disconnect the
power cord of TA-EX77 from the power outlet.
Using the jig, press the power switch (S408) on the MAIN
board in this set to turn off the power.
power cord of TA-EX77 from the power outlet.
Using the jig, press the power switch (S408) on the MAIN
board in this set to turn off the power.
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Example 1: If “42” is displayed
Higher bit: 4=0100
→
b6
Lower bit: 2=0010
→
b1
This case shows that retry was made due to combined causes of
“CLV unlock” and “ADIP error ”.
“CLV unlock” and “ADIP error ”.
Example 2: If “A2” is displayed
Higher bit: A=1010
→
b7 + b5
Lower bit: 2=0010
→
b1
This case shows that retry was made due to combined causes of
“cannot access”, “IV-R”, and “ADIP error ”.
“cannot access”, “IV-R”, and “ADIP error ”.
How to Use Table 1-1.:
Use table 1-1. by converting hexadecimal number of each digit
into decimal number (see table 1-2). If an error occurred by two
or more causes, respective numbers are added.
Use table 1-1. by converting hexadecimal number of each digit
into decimal number (see table 1-2). If an error occurred by two
or more causes, respective numbers are added.
*1 Some may not be used depending on the microcomputer version.
Table 1-2. Hexadecimal number - Decimal number
Conversion
Hexadecimal
Decimal
Hexadecimal
Decimal
0
0000
8
1000
1
0001
9
1001
2
0010
A
1010
3
0011
B
1011
4
0100
C
1100
5
0101
D
1101
6
0110
E
1110
7
0111
F
1111
8
4
2
1
8
4
2
1
Description
Bit
b7
b6
b5
b4
b3
b2
b1
b0
0
0
0
0
0
0
0
0
00
spindle slow
When spindle speed slow was detected
0
0
0
0
0
0
0
1
01
shock *1
When shock over 3.5 was detected
0
0
0
0
0
0
1
0
02
ader 5
When ADER was counted more than 5 times
successively
successively
0
0
0
0
0
1
0
0
04
address error
ADIP addresses are not serial
0
0
0
0
1
0
0
0
08
(Not used)
Not used
0
0
0
1
0
0
0
0
10
focus
Focusing failed
0
0
1
0
0
0
0
0
20
IV-R
ABCD signal level exceeded the specified range
0
1
0
0
0
0
0
0
40
CLV unlock
CLV is unlocked (CLV is out of range)
1
0
0
0
0
0
0
0
80
cannot access
Access failed
Table 1-1. Description of Retry Cause Display
Hexa-
decimal
decimal
Lower Bit
Upper Bit
Name of
Retry Cause
Hexa-
decimal
Decimal
– 7 –
SECTION 2
GENERAL
This section is extracted
from instruction manual.
from instruction manual.
– 8 –
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