Sony CMT-F3MD / HCD-F3MD Service Manual ▷ View online
11
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”.
• 0.9 mW power
Specified value : 0.84 to 0.92 mW
• 7.0 mW power
Specified value : 6.8 to 7.2 mW
lop (at 7mW)
• Labeled on the optical pickup
Iop value ± 10mA
• Traverse waveform
Specified value : Below 10% offset
• Error rate check
Specified value : For points A, B
C1 error : About 200
AD error : Below 2
For point C
C1 error : Below 50
AD error : Below 2
C1 error : About 200
AD error : Below 2
For point C
C1 error : Below 50
AD error : Below 2
• Error rate check
Specified value:
a.
a.
When using test disc (MDW-74/AU-1)
C1 error : Below 80
AD error : Below 2
C1 error : Below 80
AD error : Below 2
b.
When using check disc (TDYS-1)
C1 error : Below 50
C1 error : Below 50
• CPLAY error rate check
Specified value:
C1 error : Below 80
AD error : Below 2
C1 error : Below 80
AD error : Below 2
• Unsatisfactory if displayed as T=@@ (##) [NG”
NG
(@@, ## are both arbitrary numbers)
(@@, ## are both arbitrary numbers)
Laser power check
(5-6-2 : See page 32)
(5-6-2 : See page 32)
Traverse check
(5-6-3 : See page 32)
(5-6-3 : See page 32)
Focus bias check
(5-6-4 : See page 33)
(5-6-4 : See page 33)
C PLAY check
(5-6-5 : See page 33)
(5-6-5 : See page 33)
Self-recording/playback
check
(5-6-6 : See page 33)
check
(5-6-6 : See page 33)
Temperature
compensation
offset check
(5-6-1 : See page 32)
compensation
offset check
(5-6-1 : See page 32)
Criteria for Determination
(Unsatisfactory if specified value is not satisfied)
(Unsatisfactory if specified value is not satisfied)
• Clean the optical pick-up
• Adjust again
• Replace the optical pick-up
• Adjust again
• Replace the optical pick-up
• Replace the optical pick-up
• Replace the optical pick-up
• Replace the optical pick-up
• Replace the optical pick-up
If always unsatisfactory:
• Replace the overwrite head
• Check for disconnection of the circuits around the
• Replace the overwrite head
• Check for disconnection of the circuits around the
overwrite head
If occasionally unsatisfactory:
• Check if the overwrite head is distorted
• Check the mechanism around the sled
• Check if the overwrite head is distorted
• Check the mechanism around the sled
• Check for disconnection of the circuits around
D101 (BD (MD) board)
• Check the signals around IC101, IC121, CN102,
CN103 (BD (MD) board)
Measure if unsatisfactory:
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.
When performing adjustments, use the specified values for adjustments.
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.
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. Load a recordable disc whose contents can be erased into the unit.
2. Press the
1. Load a recordable disc whose contents can be erased into the unit.
2. Press the
MENU/NO “R”
button. When “Edit Menu” is displayed on the fluorescent indicator tube, press the
l
m
or
M
L
button to display “All Erase?”.
3. Press the
ENTER/YES “R”
button.
4. When “All Erase??” is displayed on the fluorescent indicator tube, the music calendar number blinks.
5. Press the
5. Press the
ENTER/YES “R”
button to display “Complete!!”, and press the
s
(MD) button immediately. Wait for about 10 seconds
while pressing the button.
6. When the “TOC” displayed on the fluorescent display tube goes off, release the
s
(MD) button.
7. Press the
z
REC
button to start recording. Then press the
HS
(MD) button and start recording. If recording cannot be performed,
press the
[FUNCTION]
button and set a different function.
8. To check the “track mode”, press the
HS
(MD) button to start play.
9. To release the test mode, press the
I/1
button, and turn the power off. When “TOC” disappears, disconnect the power plug from the
outlet. If the test mode cannot be released, refer to “MC COLD RESET” on page 8).
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
Fig. 2 Reading the Test Mode Display
(During playback)
@@ ###
**
$$
Fluorescent indicator tube display
@@ : Parts No. (name of area named on TOC)
##
##
: Cluster
**
: Sector
$$
: Track mode (Track information such as copy-
right information of each part)
Reading the Retry Cause Display
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
Cause of Retry
01
02
04
08
10
20
40
80
Higher Bits
Lower Bits
Hexadecimal
Bit
Binary
shock
ader5
Discontinuous address
DIN unlock
FCS incorrect
IVR rec error
CLV unlock
Access fault
Occurring conditions
When track jump (shock) is detected
When ADER was counted more than five times
continuously
continuously
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
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
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
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”.
Address
13
Reading the Retry Cause Display
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
Higher Bits
Lower Bits
Hexadecimal
Bit
Binary
When 0
Emphasis OFF
Monaural
This is 2-bit display. Normally 01.
01:Normal audio. Others:Invalid
Audio (Normal)
Original
Copyright
Write prohibited
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”.
“original”, “copyright exists”, and “write allowed”.
Example When 07 is displayed:
Higher bit : 0 = 0000
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”.
“original”, “copyright exists”, and “write prohibited”.
Hexadecimal
t
Binary Conversion Table
Hexadecimal
Binary
Hexadecimal
Binary
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
14
CD SECTION
CD TEXT DISPLAY
• This unit displays CD text.
Text is displayed for the first 50 tracks only and will not be displayed from the 51st track onwards. Do not suspect a fault in this case.
In some cases, some special characters will not be displayed and may be replaced by other characters. Do not suspect a fault in this case.
Text is displayed for the first 50 tracks only and will not be displayed from the 51st track onwards. Do not suspect a fault in this case.
In some cases, some special characters will not be displayed and may be replaced by other characters. Do not suspect a fault in this case.
AGING MODE
• Mode for repeating operations of the CD player automatically.
When errors occur:
Aging stops and a message indicating that an error has occurred such as “CD MEC ERR” is displayed.
(For details of errors, refer to “Error History Display Mode”)
When no errors occur:
Aging is repeatedly performed.
Aging stops and a message indicating that an error has occurred such as “CD MEC ERR” is displayed.
(For details of errors, refer to “Error History Display Mode”)
When no errors occur:
Aging is repeatedly performed.
Procedure:
1. Load any CD disc.
2. Press the
1. Load any CD disc.
2. Press the
[FUNCTION]
button to set the CD function.
3. While pressing the
[PLAY MODE/TUNING MODE]
and HS (MD) buttons, press the
I/1
button.
4. “AGING” is displayed on the fluorescent display tube briefly.
5. When the aging mode is set, it starts aging automatically.
6. Operations are performed in the following sequence during aging.
5. When the aging mode is set, it starts aging automatically.
6. Operations are performed in the following sequence during aging.
Aging mode sequence:
7. To release from this mode, while pressing the
[PLAY MODE/TUNING MODE]
and HS (CD) buttons, press the
I/1
button.
(Hot reset is executed)
Error History Display Mode
Mode for checking the history of errors which have occurred in the CD player.
Execute this mode after ending the aging mode.
Procedure:
1. Press the
Execute this mode after ending the aging mode.
Procedure:
1. Press the
[FUNCTION]
button to set the CD function.
2. While pressing the
M
L
and
s
(MD) buttons, press the
I/1
button.
3. “EMC@@EDC
**
” is displayed.
@@ : Number of mechanism errors (Past 3 errors)
**
: Number of errors (NO DISC ERROR) which occurred after chucking (Past 3 errors)
4. To check the history of mechanism errors, press the
[PLAY MODE/TUNING MODE]
button, and to check BD errors, press the
[REPEAT]
button, and switch the display.
5. To release, press the
I/1
button and turn the power off.
6. To erase the error history, perform COLD reset.
(While pressing the
[PLAY MODE/TUNING MODE]
and
s
(CD) buttons, press the
I/1
button)
TOC read
Playback track 1
Playback last track
CD disc tray open
CD disc tray open
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