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Model
HCD-M700
Pages
127
Size
11.59 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-m700.pdf
Date

Sony HCD-M700 Service Manual ▷ View online

9
HCD-M700
Table of Error Codes
Error Code
Description
10
11
12
20
21
22
23
24
30
31
40
41
42
43
50
51
Could not perform loading
The changer error occurred
Loading switches combined incorrectly
Timed out without reading the top of PTOC
Could read top of PTOC, but detected error
Timed out without accessing UTOC
Timed out without reading UTOC
Error in UTOC
Could not start playback
Error in sector
A cause of retry occurred during normal recording
Retried due to DRAM overflow
Retry occurred during TOC writing
Retry aborted during S.F editing
Other than access processing, and could not read address.
Focus NG occurred and overran.
10
HCD-M700
Jig For Checking BD Board Waveform
The special jig (J-2501-196-A) is useful for checking the waveform of the BD board. The names of terminals and the checking items to be
performed are shown as follows.
GND : Ground
I+3V : For measuring Iop (Check the deterioration of the optical pick-up laser)
Iop
: For measuring Iop (Check the deterioration of the optical pick-up laser)
TE
: TRK error signal (Traverse adjustment)
VC
: Reference level for checking the signal
RF
: RF signal (Check jitter)
FE
: Focus error signal
I+3V
Iop
TE
VC
GND
FE
RF
CN105
I+3V
Iop
GND
TE
FE
VC
RF
I+3V
Iop
GND
TE
FE
VC
RF
1
7
for MDM-7B4M
SECTION 1
SERVICING NOTE
11
HCD-M700
Jig For Checking DVD Board and DIGITAL Board Waveform
The special jig (J-2501-196-A) is useful for checking the waveform of the DVD board and DIGITAL board.
• Extention cable (10P)
(J-2501-219-A)
• Extention cable (27P)
(J-2501-220-A)
jig (10P)
(J-2501-219-A)
jig (27P)
(J-2501-220-A)
CN607
CN608
CN705
DVD board
CONTROL board
CN101
DIGITAL board
• DISC TRAY LOCK
If the disc tray does not open and the message “LOCKED” appears,
press the two buttons of  ENTER/START  and  Z DVD  at the same
for 5 seconds or longer.
Then the lock is released, the message “UNLOCKED” appears for
2 seconds and the disc tray opens.
12
HCD-M700
Iop DATA RECORDING AND DISPLAY WHEN OPTICAL PICK-UP AND NON-VOLATILE MEMORY (IC195 OF
BD BOARD) ARE REPLACED
The Iop value labeled on the optical pick-up can be stored in the non-volatile memory. By storing the value, it will eliminate the need to look
at the value on the label of the optical pick-up. When replacing the optical pick-up or non-volatile memory (IC195 of BD board), store the Iop
value on the optical pick-up according to the following procedure.
Record Precedure:
1. Press the   ?/1
  
button to turn on the power.
2. Press the  FUNCTION  button to select the “MD” function.
3. While pressing the  x  button and the  REC MODE  button at the same time, press the  FUNCTION  button.
4. Press the  MD 
>
 “R”  button to display “[Service]”. Then press the  ENTER/YES “R”  button.
5. Press the  MD 
>
 “R”  button to display “Iop Write” (C05) and press the  ENTER/YES “R”  button.
6. The display becomes “Ref=@@@.@” (@ is an arbitrary number) and the numbers which can be changed will blink.
7. Input the Iop value written on the optical pick-up.
To select the number : Press the  MD 
.
 “R”  button or the  MD 
>
 “R”  button.
To select the digit
: Press the  REC MODE  button.
8. When the  ENTER/YES “R”  button is pressed, the display becomes “Measu=@@@.@” (@ is an arbitrary number).
9. As the adjustment results are stored for the 6 value. Leave it as it is and press the  ENTER/YES “R”  button.
10. “Complete!” will be displayed momentarily. The value will be stored in the non-volatile memory and the display will become “Iop
Write” (C05).
11. Press the  REPEAT  button twice to exit the mode.
12. Press the  ?/1  button to turn off the power.
Display Precedure:
1. Press the  ?/1  button to turn on the power.
2. Press the  FUNCTION  button to select the “MD” function.
3. While pressing the  x  button and the  REC MODE  button at the same time, press the  FUNCTION  button.
4. Press the  MD 
>
 “R”  button to display “[Service]”. Then press the  ENTER/YES “R”  button.
5. Press the  MD 
>
 “R”  button to display “Iop Read” (C26) and press the  ENTER/YES “R”  button.
6. “@@.@/##.#” is displayed and the recorded contents are displayed.
@@.@ : indicates the Iop value labeled on the optical pick-up
##.#
: indicates the Iop value after adjustment
7. To end, press the  MENU/NO “R”  button to display “Iop Read” (C26). Then press the  REPEAT  button twice.
8. Press the  ?/1  button to turn off the power.
Checks Prior to Parts Replacement and Adjustments in MD
Before performing repairs, perform the following checks to determine the faulty locations up to a certain extent.
Details of the procedures are described in “Section 5  Electrical Adjustments”.
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.
• 0.93 mW power
Specified value : 0.85 to 0.91 mW (KMS-260B)
0.80 to 0.96 mW (KMS-260E)
• 7.25 mW power
Specified value : 6.8 to 7.2 mW (KMS-260B)
7.0 to 7.5 mW (KMS-260E)
• Iop (at 7.25mW)
Labeled on the optical pick-up
Iop value 
± 10mA
• Unsatisfactory if displayed as “NG : XXXX”NG
(XXXX are arbitrary numbers)
• Unsatisfactory if displayed as “T=@@ (##) [NG]”
NG
(@@, ## are both arbitrary numbers)
Laser power check
(6-2 : See page 36)
Auto check
(6-4 : See page 37)
Temperature
compensation
offset check
(6-1 : See page 36)
Criteria for Determination
(Unsatisfactory if specified value is not satisfied)
• Clean the optical pick-up
• Adjust again
• Replace the optical pick-up
• Replace the optical pick-up
• Replace the optical pick-up
• Check for disconnection of the circuits around
D101 (BD board)
• Check the signals around IC101, IC151, CN102,
CN103 (BD board)
Measure if unsatisfactory
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