Sony DHC-NX5MD / HMC-NX5MD 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 31)
• 5-6-3. Iop Compare (see page 31)
• 5-6-4. Auto Check (see page 32)
• 5-6-3. Iop Compare (see page 31)
• 5-6-4. Auto Check (see page 32)
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.
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.
10
Fig. 2 Reading the Test Mode Display
(During playback)
(During playback)
@@####**$$
Fluorescent display tube display
@@ : Parts No. (name of area named on TOC)
##
##
: Cluster
**
: Sector
$$
: Track mode (Track information such as copyright infor-
mation of each part)
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 ENTER/YES button while pressing the A (DISC 5) button and NAME EDIT/CHARACTER button.
2. Press the REC/RECIT button to start recording. Then press the X button and start recording.
3. To check the “track mode”, press the H button to start play.
4. To exit the test mode, press the @/1 button, and turn OFF the power. When “TOC” disappears, disconnect the power plug from the outlet.
1. Press the ENTER/YES button while pressing the A (DISC 5) button and NAME EDIT/CHARACTER button.
2. Press the REC/RECIT button to start recording. Then press the X button and start recording.
3. To check the “track mode”, press the H button to start play.
4. To exit the test mode, press the @/1 button, and turn OFF the power. When “TOC” disappears, disconnect the power plug from the outlet.
} Address (Physical address on disc)
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
Fig. 1 Reading the Test Mode Display
(During recording and stop)
(During recording and stop)
RTs@@c##c***
Fluorescent display tube display
@@ : 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
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
• LOCATION OF CONTROLS
– Front Panel –
– Front Panel –
1 G (CD) button
2 S (CD) button
3 s (CD) button
4 DISC 1 to 5 (CD) button and indicator
5 A (CD DISC 1 to 5) button
6 A (MD) button
7 m (MD) button
8 M (MD) button
9 NAME EDIT/CHARACTER button
q; CLEAR button
qa MENU/NO button
qs ENTER/YES button
qd . MD JOG > +/– dial
qf S.F EDIT button
qg REC MODE button
qh HIGH SPEED button
qj Display window
qk NORMAL button
ql REC/REC IT button
w; MD DISPLAY button
wa MD disc compartment
ws G (MD) button
wd S (MD) button
wf s (MD) button
wg CD disc tray
wa
wg
1 2 3
4
5
qd
qf
qg
qh
qj
qk
ql
w;
7
8
8
qa
6
9
wd
wf
ws
q;
qs
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