Sony MDS-SD1 User Manual Page 8
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- Table of contents
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• 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, and c
C1 error : Below 220
AD error : Below 2
• Error rate check
Specified value:
a.When using test disc (MDW-74/AU-1)
C1 error : Below 80
AD error : Below 2
b.When using check disc (TDYS-1)
C1 error : Below 50
• CPLAY error rate check
Specified value:
C1 error : Below 80
AD error : Below 2
• Unsatisfactory if displayed as T=@@ (##) [NG]”
NG
(@@, ## are both arbitrary numbers)
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”.
Laser power check
(5-6-2 : See page 25)
Traverse check
(5-6-3 : See page 25)
Focus bias check
(5-6-4 : See page 26)
C PLAY check
(5-6-5 : See page 26)
Self-recording/playback
check
(REC/PLAY)
(5-6-6 : See page 26)
TEMP check
(Temperature
compensation
offset check)
(5-6-1 : See page 25)
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
• 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
overwrite head
If occasionally unsatisfactory:
• Check if the overwrite head is distorted
• Check the mechanism around the sled
• Check for disconnection of the circuits around D101
(BD board)
• Check the signals around IC101, IC121, CN102,
CN103 (BD 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.
- SERVICE MANUAL 1
- SELF-DIAGNOSIS FUNCTION 2
- Parts No 4
- SECTION 1 6
- SERVICING NOTE 6
- ARE REPLACED 7
- • Error rate check 8
- (5-6-1 : See page 25) 8
- FORCED RESET 9
- Objective lens of 10
- ATTACHING THE GLASS ASSEMBLY 11
- SERVICING POSITION 12
- RETRY CAUSE DISPLAY MODE 13
- Hexadecimal 14
- Binary Conversion Table 14
- SECTION 2 15
- DISASSEMBLY 16
- SECTION 3 16
- 3-4. BASE UNIT AND BD BOARD 17
- 3-3. SLIDER (CAM) 17
- SECTION 4 19
- TEST MODE 19
- 4-5. SELECTING THE TEST MODE 20
- 4-7. TEST MODE DISPLAYS 22
- SECTION 5 23
- ELECTRICAL ADJUSTMENTS 23
- 4.Laser power 24
- 5-6. CHECKS PRIOR TO REPAIRS 25
- Laser power 27
- Optical pick-up 27
- 5-11. TRAVERSE ADJUSTMENT 28
- 5-12. FOCUS BIAS ADJUSTMENT 29
- 5-13. ERROR RATE CHECK 30
- 5-14. FOCUS BIAS CHECK 30
- ADJUSTMENT 30
- [BD BOARD] (SIDE A) 31
- [BD BOARD] (SIDE B) 31
- SECTION 6 32
- DIAGRAMS 32
- (Page 35) 33
- (Page 34) 34
- These are omitted 35
- (Page 49) 36
- – 41 – – 42 – 37
- S-24CO2AFJA-TB 38
- – 45 – – 46 – 39
- (Page 52) 40
- (Page 45) 40
- (Page 46) 40
- (Page 57) 41
- (Page 60) 41
- (Page 47) 42
- – 55 – – 56 – 44
- – 59 – – 60 – 46
- 6-17. IC BLOCK DIAGRAMS 47
- IC152 BH6511FS-E2 48
- – MAIN Section – 48
- IC201 UDA1341TS/N2 48
- IC301 LB1641 48
- – CONNECTOR Section – 49
- IC822 M62016FP-E1 49
- IC774 P82B715TD.118 49
- IC851 M5293L 49
- 6-18. IC PIN FUNCTIONS 50
- SECTION 7 53
- EXPLODED VIEWS 53
- 7-2. FRONT PANEL SECTION 54
- SECTION 8 57
- ELECTRICAL PARTS LIST 57
- BD CONNECTOR 58
- CONNECTOR MAIN 59
- PANEL SW 62
- Sony Corporation 64
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