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Sharp MD-MT270HS/BK, Service Manual

The Sharp MD-MT270HS/BK Service Manual is the perfect companion for this sleek and compact portable MiniDisc player. Easily download this comprehensive manual for free from manualshive.com, providing detailed instructions and troubleshooting tips to ensure optimal performance and enjoyment of your device.

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– 36 –

MD-MT270H

VOLTAGE

PIN  

NO.  VOLTAGE 

1 
2

4
5
6
7
8
9

10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48

PIN  

NO.  VOLTAGE 

PIN  

NO.  VOLTAGE 

PIN  

NO.  VOLTAGE 

100 

PIN  

NO.  VOLTAGE 

PIN  

NO.  VOLTAGE 

IC401

PIN  

NO.  VOLTAGE 

PIN  

NO.  VOLTAGE 

PIN  

NO.  VOLTAGE 

PIN  

NO.  VOLTAGE 

IC101 

0.73V
0.73V
0.73V
0.73V
1.28V
1.28V
1.28V
1.28V
1.28V
1.28V
1.28V
1.28V
1.28V
1.28V
1.28V
1.28V
1.28V
1.28V
1.28V
1.28V
1.28V
1.28V
1.28V
0.73V
1.49V
2.47V
2.47V
2.47V
2.54V
1.71V
0V
1.29V
1.28V
0.58V
1.28V
1.28V
1.27V
1.26V
0.59V
2.54V
1.53V
0V
1.27V
0V
0.82V
1.27V
0.82V
0.73V

IC201 

(0V)
(0V)
(2.52V)
0V
(2.48V)
(1.22V)
(1.22V)
(0V)
(2.48V)
(2.52V)
(0.83V)
(0.65V)
0V
0V
0V
2.53V
0V
1.16V
1.16V
2.31V
0V
1.16V
1.16V
0V
2.53V
2.53V
1.25V
1.25V
2.46V
0V
2.53V
1.16V
1.18V
1.01V
0V
2.52V
1.43V
2.52V
0V
0V
(0.95V)
(1.06V)
2.53V
1.26V
0V
2.53V
0V
0V
0V
0V

0V
0V
2.46V
0V
0V
0V
0V
2.46V
2.46V
2.46V
1.25V
0V
1.13V
2.49V
2.49V
2.56V
2.49V
2.49V
0V
2.49V
2.49V
0V
2.49V
0V
0V
0V
0V
0V
0V
2.49V
2.49V
2.49V
2.49V
2.49V
2.49V
0V
1.25V
2.49V
2.49V
0V
0V
0V
0V
2.48V
2.56V
2.53V
2.53V
0V
2.48V
2.48V

2.49V
2.49V
2.49V
2.49V
2.49V
0V
2.53V
2.49V
2.49V
2.49V
2.49V
0V
0V
0V
0V
0V
2.49V
0V
0V
2.49V
2.49V
2.49V
0V
2.49V
2.49V
0V
2.49V
2.49V
(0.46V)
(0.46V)
(0.46V)
(0.46V)
(0.46V)
(0.46V)
(0.46V)
(0.46V)
0V
0V
1.99V
0.51V
2.49V
2.49V
1.48V
0V
1.25V
2.49V
2.49V
2.49V
2.49V
0V

IC601 

IC703 

IC771 

IC803 

3

1 
2

4
5
6
7
8
9

10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50

51

101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128

52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99

3

100 

1 
2

4
5
6
7
8
9

10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50

51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99

3

1 
2

4
5

3

1 
2

4

3

37 
38

40
41
42
43
44
45

46
47
48

39

1 
2

4
5
6
7
8
9

10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36

52
53

55
56
57
58
59
60

61
62
63

64

54

49
50
51

3

1 
2

4
5
6
7
8
9

10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

3

1.20V
2.53V
1.27V
0V
2.53V
0V
1.28V
1.28V
1.28V
1.28V
1.28V
1.28V
1.28V
1.56V
0V
0V
0V
0V
1.27V
0V
0V
0V
0V
0V
0V
0V
2.53V
2.53V
0V
2.42V
0V
1.96V
1.25V
1.25V
1.25V
0V
1.06V
1.27V
2.53V
0V
1.02V
(0V)
(0V)
(0V)
(2.52V)
(0V)
2.53V
(0V)
(0V)
(0V)

PIN  

NO.  VOLTAGE 

IC202 

1 
2

4
5
6
7
8
9

10
11
12
13
14

10
11
12
13
14

15
16

10
11
12
13
14
15
16

17
18
19
20
21
22
23
24

3

0V
0V
1.27V
2.31V
2.55V

3.54V
3.57V
0V
0V

0.76V
0.76V
0V
0V
0V
2.56V
–2.41V
0V
2.56V
0V
1.28V
0V
2.48V
0V
2.48V
2.55V
0V
–2.41V
–2.41V
0V
0V
0V
0.76V
0.76V

0V
1.99V
1.99V
1.99V
0V
0V
0.63V
0V
0V
2.54V
2.49V
2.49V
0V
2.53V
0V
0V
0V
0V
2.53V
0.03V
0.03V
0V
0V
0V
0V
1.99V
0V
0V
0V
1.99V
0V
0V
0V
0V
2.48V
0V
0.02V
2.53V
2.56V
6.23V
6.27V
2.55V
2.55V
2.48V
2.48V
2.48V
0V
0V
0V
0V
0.02V
0.02V
0V
0V
0.02V
0V
1.99V
0V
1.34V
1.99V
1.99V
1.99V
1.99V
0V

PIN  

NO.  VOLTAGE 

IC852

1 
2

4
5
6
7
8

3

1.24V
2.50V
0.39V
0V
1.12V
1.27V
1.27V
1.27V

PIN  

NO.  VOLTAGE 

IC203

1 
2
3

0V
1.60V
2.53V

PIN  

NO.  VOLTAGE 

IC251

1 
2

4
5
6
7
8

3

1.37V
0.45V
2.00V
0V
1.39V
1.39V
1.39V
1.39V

PIN  

NO.  VOLTAGE 

IC802 

1 
2

4
5
6

3

0.72V
1.3V
3.7V
0.72V
1.24V
4.95V

PIN  

NO.  VOLTAGE 

Q461

B
E
S

0.56V
0V
0V

PIN  

NO.  VOLTAGE 

Q801

G
D
S

3.78V
2.00V
4.73V

PIN  

NO.  VOLTAGE 

Q804

B
E
C

1.94V
2.50V
2.49V

PIN  

NO.  VOLTAGE 

Q851

G
D
S

0V
2.00V
0V

PIN  

NO.  VOLTAGE 

IC809 

1 
2

4
5
6

3

0V
0V
0V
4.6V
4.56V
4.56V

PIN  

NO.  VOLTAGE 

IC841 

1 
2

4
5

3

0V
2.5V
1.98V
1.98V
0V

PIN  

NO.  VOLTAGE 

IC402

1 
2

4
5
6
7
8

3

0V
2.47V
0V
0V
2.47V
0V
2.47V
2.47V

PIN  

NO.  VOLTAGE 

IC431

1 
2

4

3

2.47V
2.47V
0V
0V

PIN  

NO.  VOLTAGE 

IC353 

1 
2

4
5
6

3

0V
0V
1.87V
0V
0V
1.87V

PIN  

NO.  VOLTAGE 

IC354

1 
2

4
5

3

0V
0V
0V
0V
0V

PIN  

NO.  VOLTAGE 

IC351 

1 
2

4
5
6
7
8
9

3

0V
0V
0V
0V
0V
0V
0V
0V
1.07V
0V
0V
1.07V
0V
4.51V

PIN  

NO.  VOLTAGE 

IC501

1 
2

4
5
6
7
8
9

3

0V
0V
0V
0V
0V
0V
2.31V
2.31V
0V
0V
2.54V
0V
2.48V
0V
2.48V
0V

PIN  

NO.  VOLTAGE 

IC873 

1 
2

4
5

3

2.47V
0V

4.52V
6.63V

1.27V

0V
1.27V
2.53V
0V
0V
0V
0V
0V
2.53V
2.53V
0V
0V
0V
2.56V
1.02V
0V
2.49V
(0.46V)
(0.46V)
(0.46V)
(0.46V)
(0.46V)
(0.46V)
(0.46V)
(0.46V)
2.46V
2.46V
0V

2.53V
(0.65V)
(0.83V)
(2.52V)
(2.48V)
–
(0V)
(2.52V)
(0V)
(0V)
(0V)
2.53V
0V
(0V)
(0V)
(0V)
(0V)
(0V)
(0V)
(2.52V)
(2.48V)
(1.22V)
(1.22V)
0V

Summary of Contents for MD-MT270HS/BK

Page 1: ...REINSTALLING THE MAIN PARTS 6 ADJUSTMENT 7 MD ERROR MESSAGE DISPLAY CONTENT LIST 21 NOTES ON SCHEMATIC DIAGRAM 22 TYPES OF TRANSISTOR AND DIODE 22 BLOCK DIAGRAM 23 SCHEMATIC DIAGRAM 24 WIRING SIDE OF P W BOARD 32 VOLTAGE 36 WAVEFORMS OF MD CIRCUIT 37 TROUBLESHOOTING 38 FUNCTION TABLE OF IC 41 PARTS GUIDE EXPLODED VIEW PACKING OF METHOD FOR U K ONLY CONTENTS In the interests of user safety the set ...

Page 2: ...thout a compact disc and the Pickup is on a position outer than the lead in position the Laser will light for several seconds to detect a disc Do not look into the Pickup Lens 2 The Laser Power Output of the Pickup inside the unit and replacement service parts have already been adjusted prior to shipping 3 No adjustment to the Laser Power should be attempted when replacing or servicing the Pickup ...

Page 3: ...ting time when using an alkaline battery may be different depending on the type and manufacturer of the battery and on the operating temperature Type Portable MiniDisc recorder Signal readout Non contact 3 beam semicon ductor laser pickup Audio channels Stereo 2 channels monaural 1 channel Frequency response 20 20 000 Hz 3 dB Rotation speed Approx 400 1 800 rpm CLV Error correction ACIRC Advanced ...

Page 4: ...nput Socket 12 Fast Forward Fast Reverse Recording Level Menu Select Name Select Buttons Display panel 1 Level Meter 2 Random Indicator 3 Repeat Indicator 4 Long play Recording Mode Indicator 5 Monaural Mode Indicator 6 Battery Indicator 7 Play Indicator 8 Pause Indicator 9 Disc Name Indicator 10 Record Indicator 11 Synchro Recording Indicator 12 Character Time Information Indicator 13 TOC Indicat...

Page 5: ...xible PWB After removing the flexible PWB 1 for the optical pickup from the connector do not touch directly the front end of flexible PWB with your hand so as to prevent damage of optical pickup by static electricity B1 x2 ø1 4x2 5mm C1 x2 ø1 4x2 5mm C1 x1 ø1 4x2 5mm C1 x1 ø1 4x2 5mm A3 x1 C2 x1 Bottom Cabinet Main PWB C2 x1 Pull Pull Pull D2 x1 ø1 4x1 5mm Bracket Bracket Mechanism Unit D1 x2 ø1 4...

Page 6: ...noise is caused How to remove the sled motor See Fig 6 3 1 Remove the stop washer C1 x 1 pc and remove the drive gear C2 x 1 pc 2 Remove the solder joints C3 x 3 of flexible PWB 3 Remove the screws C4 x 2 pcs and remove the sled motor Note Take care so that the motor gear is not damaged If the gear is damaged noise is caused How to remove the spindle motor See Fig 6 2 1 Remove the solder joints B1...

Page 7: ...inuous record from the specified address is performed Change of record laser output servo gain is also changed according to laser output The temperature correction is performed only when servo start is performed but the posture correction is not performed during continuous recording 5 MANUAL 1 Mode Temperature is displayed Updating in real time Seeing the displayed adjustment value perform prelimi...

Page 8: ...out of range focus ON failure and adjustment error When the PLAY button is pressed while ADJ OK is displayed AUTO2 is executed 2 AUTO2 Mode When the STOP button is pressed while the AUTO2 menu appears or during automatic adjustment the mode changes to the TEST mode stop state At this time the adjustment value is not output Adjustment NG Adjustment item out of range and adjust ment error When the P...

Page 9: ...e error data indication menu appears the error data is initialized C L E A R _ Error Code Explanation of error history code 13h Excessive number of retry to draw servo during its adjustment 16h COUT detection time over during servo adjustment 17h The level of input signal from the RF amplifier is out of the allowable range 1Fh Cannot clear the factor of ENDEC DINT 21h Cannot focus on the disc 22h ...

Page 10: ...utton and PLAY button Continue to hold down the PLAY button to release the VOL button and press the VOL button 3 Start the EEPROM mode Temp menu Button operation in order of MENU FAST REVERSE x 3 times PLAY PLAY in the test mode STOP state TM is displayed Temperature code Temperature reference 4 Once press FAST FORWARD and determine the displayed microcomputer TEMP input AD value TPin is displayed...

Page 11: ... H S R m _ 9 A H S R o _ 7 B H S B R _ 6 0 H O S L _ 1 4 H P J G _ 4 6 H Item display Set values Tracking setting Item display Set values T G 1 _ 1 7 H T G 2 _ 4 0 H T F 0 _ 1 0 H T F 1 _ 7 0 H T F 2 _ E 0 H T f 0 _ 1 0 H T f 1 _ 4 0 H T f 2 _ E 4 H T F S _ 0 0 H T B o _ 2 0 H T B t _ 3 4 H T K o _ 2 0 H T K t _ 3 2 H T K T _ 1 6 H T D o _ 6 7 H T D t _ 0 E H T D T _ 1 6 H S C o _ 0 0 H S C t _ 3 ...

Page 12: ... 2 H M F P _ 4 B H S P M _ 0 0 H M S L _ 0 0 H U S 0 _ 0 0 H U S 1 _ 0 0 H U S 2 _ 0 0 H w E 0 p _ 5 4 H w E 2 _ 4 6 H w E 3 p _ 0 5 H w E 3 g _ 0 0 H w E A _ 1 6 H w E F _ 0 0 H K 1 0 _ 0 F H K 1 1 _ 8 E H ADJ SET setting Item display Set values C O K _ 2 8 H F A T _ C 0 H T A T _ 3 E H C A T _ 4 0 H F A B _ 6 4 H Bass setting Item display Set values B S 0 _ 0 2 H B S 1 _ 0 1 H B S 2 _ 1 2 H B S ...

Page 13: ...l adjustment menu M A N U 1 ATT manual adjustment menu M A N U 2 Error history display menu E D A T A Test mode normal playback menu N O R M A L E E P R O M A U T O 2 Preautomatic Adjustment menu Preadjustment error adjustment value output During preadjustment adjustment Adjustment error Normal end Preadjustment normal end adjustment value output During ATT automatic adjustment PLAY PLAY A U T O 1...

Page 14: ...ress changes as follows when the MENU button is pressed 0 0 3 2 H initial value 0 3 C 0 H 0 7 0 0 H 0 8 A 0 H A d 0 0 3 2 A d 0 3 C 0 A d 0 7 0 0 MENU MENU MENU MENU A d 0 8 A 0 In the start address setting state the start address change digit changes when the REC button is pressed 1st digit initial value 2nd digit 3rd digit A d 0 0 3 2 A d 0 0 3 2 REC REC REC A d 0 0 3 2 In the continuous playbac...

Page 15: ... P Continuous record playback from any address A d 0 0 3 2 0 0 3 2 H initial value 0 3 C 0 H 0 7 0 0 H 0 8 A 0 H A d 0 3 c 0 A d 0 7 0 0 MENU MENU MENU MENU A d 0 8 A 0 In the start address setting state the start address change digit changes when the REC button is pressed A d 0 0 3 2 1st digit initial value 2nd digit 3rd digit A d 0 0 3 2 A d 0 0 3 2 REC REC REC A d 0 9 5 0 TEST mode normal playb...

Page 16: ...the specific setting menu is set Error history display menu Error history 0 display Error code Error history 1 display Error code Error history 2 display Error code Error history 3 display Error code Error history 4 display Error code Error history 5 display Error code Error history 6 display Error code Error history 7 display Error code Error history 8 display Error code Error history 9 display E...

Page 17: ...ORWARD FAST REVERSE P L E FAST FORWARD FAST REVERSE FAST FORWARD FAST REVERSE Spin setting menu PLAY S p i n Spin Setting S P G S P i FAST FORWARD FAST REVERSE S P m FAST FORWARD FAST REVERSE S P o FAST FORWARD FAST REVERSE P G M FAST FORWARD FAST REVERSE S P 1 FAST FORWARD FAST REVERSE S P 2 FAST FORWARD FAST REVERSE S P 3 FAST FORWARD FAST REVERSE S P 4 FAST FORWARD FAST REVERSE S P 5 FAST FORWA...

Page 18: ... 1 T G 2 FAST FORWARD FAST REVERSE T F 0 FAST FORWARD FAST REVERSE T F 1 FAST FORWARD FAST REVERSE T F 2 FAST FORWARD FAST REVERSE T f 0 FAST FORWARD FAST REVERSE T f 1 FAST FORWARD FAST REVERSE T f 2 FAST FORWARD FAST REVERSE T F S FAST FORWARD FAST REVERSE T B t FAST FORWARD FAST REVERSE When the STOP button is pressed in specific menu the TEST MODE STOP state is set When the MENU button operati...

Page 19: ...ecific state the menu changes to TEMP SETTING menu In the specific setting display state the setting change digit changes when the REC button is pressed 1st digit initial value 2nd digit REC REC In the specific state the setting changes in the range of 0h to Fh when the VOL button is pressed When the REC button is pressed in each state the set digit is changed F A B FAST FORWARD FAST REVERSE Bass ...

Page 20: ...FORWARD FAST REVERSE R 2 1 FAST FORWARD FAST REVERSE R 4 0 FAST FORWARD FAST REVERSE R 4 1 FAST FORWARD FAST REVERSE M F P FAST FORWARD FAST REVERSE S P M FAST FORWARD FAST REVERSE M S L FAST FORWARD FAST REVERSE U S 0 FAST FORWARD FAST REVERSE U S 1 FAST FORWARD FAST REVERSE U S 2 FAST FORWARD FAST REVERSE w E 0 p FAST FORWARD FAST REVERSE FAST FORWARD FAST REVERSE w E 2 FAST FORWARD FAST REVERSE...

Page 21: ... write test Er MD80 EEPROM readout Check sum error TOC FORM Abnormal data DISC detection L UTOC SELECTOR is Loop indicates the detailed factor a_ Address abnormal t_ FTNO LTNO NAME FULL The number of characters for names exceeds the specification limit OPEN The disc compartment is open Open lid is detected while the system is running Display content Error content Error code Remarks f Focus error r...

Page 22: ...tage in each section is the one measured by Digital Multimeter between such a section and the chas sis with no signal given Parts marked with are important for maintaining the safety of the set Be sure to replace these parts with specified ones for maintaining the safety and performance of the set HRB0103 B 2SB709 A 2SD601 AR 3LN01 S DTC123 TKA MCH3409 UN5213 TOP VIEW TOP VIEW TOP VIEW F05J2L TOP ...

Page 23: ...CAL PICUP LASER OPIC PICK 16M BIT D RAM IX2960AF IC202 LCD UNIT OPTICAL LINE IN J701 AUDIO AMP IR3R59N IC703 HEADPHONES KEY SWITCH SW451 459 J703A AD CONVERTER REC AMP AK5354 IC501 PWM MOTOR DRIVER LV8221T IC601 EEPROM 24WC05UI2 IC402 SYSTEM MICROCOMPUTER IC401 2 3V REGULATOR 2872F23 IC771 4 5V REGULATOR 2872F45 IC873 1 1A F841 D842 D843 IC251 FCH8601 N CH MOS FET IC809 XP04313 IC802 XP04501 IC803...

Page 24: ...FPCNT PR DISC SENSE INPGCK INPGI MCPGI PBLAT DSPSCK DSPSTB DSPDAT P7_0 SPIN CHGON BUZOUT PBOPON HDON RPLAY RCPCNT P8_1 REC DINT NMI VCC XTAL VSS RESET EXTAL SYCPW VSS CIN EPRT PLAY DISCP OPICGA EEPD DHLAT TEST0 RACLK RCLAT P6_1 PCILD RMDAT PCLK SGAIN LDVAR JPNP VSS SYRS SYRD SYD7 SYD6 SYD5 SYD4 SYD3 SYD2 SYD1 SYD0 XRST EEPK EPCS AVSS SLCNT1 SLCNT2 SLCNT3 T T F F TGND UOUT COM VOUT WOUT SCOM PGND4 ...

Page 25: ...1 EFMOX MCCK PWMCK PLLCK AGND3 PLLBVC EXTC AVCC3 AGND1 AVCC1 EFMI TEST3 EFMO SYRS RAA11 VREF TCRS RAA3 RAA2 RAA1 RAA0 RAA4 RAA5 RAA6 RAA7 RAA8 RAOEX RACASX RAD2 RAD3 VDD2 DGND RAA9 RARASX RAWEX RAD1 RAD0 AVCC2 DGND DGND BIN EIN FIN AIN TCG SPDRR SPDRF SLDRR SLDRF TRDRR TRDRF X176KO TEST2 FODRF FODRR TEST0 TEST1 WBI VBAT SYRDX SYWRX SYSD7 SYSD6 SYSD5 SYSD4 SYSD3 SYSD2 SYSD1 SYSD0 RSTX DINTX COUT SE...

Page 26: ...3 1K 10K 2 2 MA2SD19 0 1 1 HRB0103B HRB0103B 0 1 0 1 1 1 0 01 33 6 3V 0 22 0 1 100K 0 4A DC60V 1 DG1H3 47µH 1 0 1 560K 22K 330K 330K 3 3M 120K 330K 180K 0 33 180K 33K 0 1 1 DG1H3 DG1H3 D1FH3 MCH3409 10µH 10 10V 1 1 5K 12K 22K UN5213 68K 39K 39K 22K 2SJ645 39K 100K 0 1 12K 1K MA8043M MA2SD19 1 1A 1 1 F05J2L 1 1 68K 2SD601 A 27K 47 6 3V 22K 22K 0 1 DC IN 5V POWER TRANSISTOR POWER SELECT CHARGE DRIVE...

Page 27: ... VOL BASS A0 A1 A2 VSS SDA SCL WP VCC AC L L R R PDN CSN CCLK CDTI BCLK VD VA RIN2 LIN2 RIN1 LIN1 R CH L CH OUT VDD VSS I O1 I O2 WE RAS A9 A0 A1 A2 A3 VCC A4 A5 A6 A7 A8 OE CAS I O3 I O4 GND A10 GND VCC VCOM VSS MCLK SDTO LRCK L R GND VCC GND Vout R CH L CH L CH R CH LCD UNIT 218 LCD DRIVER LCD 1 0 S G Z Z S V S 0 G 1 V V Z 0 G 1 ATT LIN LLPFO L L R R RLPFO RIN LHPVEE LHPVCC DAT CLK LAT RHPVEE RH...

Page 28: ...4 TEST1 RFPCNT PR DISC SENSE INPGCK INPGI MCPGI PBLAT DSPSCK DSPSTB DSPDAT P7_0 SPIN CHGON BUZOUT PBOPON HDON RPLAY RCPCNT P8_1 REC DINT NMI VCC XTAL VSS RESET EXTAL SYCPW VSS CIN EPRT PLAY DISCP OPICGA EEPD DHLAT TEST0 RACLK RCLAT P6_1 PCILD RMDAT PCLK SGAIN LDVAR JPNP VSS SYRS SYRD SYD7 SYD6 SYD5 SYD4 SYD3 SYD2 SYD1 SYD0 XRST EEPK EPCS AVSS SLCNT1 SLCNT2 SLCNT3 T T F F TGND UOUT COM VOUT WOUT SC...

Page 29: ...PLLBVC EXTC AVCC3 AGND1 AVCC1 EFMI TEST3 EFMO SYRS RAA11 VREF TCRS RAA3 RAA2 RAA1 RAA0 RAA4 RAA5 RAA6 RAA7 RAA8 RAOEX RACASX RAD2 RAD3 VDD2 DGND RAA9 RARASX RAWEX RAD1 RAD0 AVCC2 DGND DGND BIN EIN FIN AIN TCG SPDRR SPDRF SLDRR SLDRF TRDRR TRDRF X176KO TEST2 FODRF FODRR TEST0 TEST1 WBI VBAT SYRDX SYWRX SYSD7 SYSD6 SYSD5 SYSD4 SYSD3 SYSD2 SYSD1 SYSD0 RSTX DINTX COUT SENSE TEMON TOTMON TEST DIN DOUT ...

Page 30: ...K 10K 2 2 MA2SD19 0 1 1 HRB0103B HRB0103B 0 1 0 1 1 1 0 01 0 22 0 1 100K 0 4A DC60V 1 DG1H3 1 0 1 560K 22K 47P CH 330K 330K 3 3M 120K 33P CH 330K 180K 0 33 180K 33K 0 1 1 DG1H3 DG1H3 D1FH3 220 4V MCH3409 10µH 22 6 3V 1 1 5K 12K 22K 220 4V UN5213 68K 39K 39K 22K 2SJ645 39K 100K 0 1 12K 1K MA8043M MA2SD19 1 1A 1 1 F05J2L 100MHz 1 1 68K 2SD601 A 27K 22K 22K 0 1 DC IN 5V POWER TRANSISTOR POWER SELECT ...

Page 31: ... VSS I O1 I O2 WE RAS A9 A0 A1 A2 A3 VCC A4 A5 A6 A7 A8 OE CAS I O3 I O4 GND A10 GND VCC VCOM VSS MCLK SDTO LRCK L R GND VCC GND Vout R CH L CH L CH R CH LCD UNIT 218 LCD DRIVER LCD ATT LIN LLPFO L L R R RLPFO RIN LHPVEE LHPVCC DAT CLK LAT RHPVEE RHPVCC HP BEEP LPF ATT AMPuGAIN SEL AMPuGAIN SEL LOGIC BIAS LPF AK5354 S 80820CLN RESET 24WC05UI2 1K IC402 OPTICAL LINE IN HEADPHONES 16M BIT D RAM EEPRO...

Page 32: ...3 R715 R716 R713 IC242 R714 IC241 C241 R771 1 5 10 15 20 25 30 32 33 35 40 45 50 55 60 65 64 65 70 75 80 85 90 95 96 97 100 105 110 115 120 125 0 4A DC60V 128 1 5 10 12 13 15 20 24 5 1 1 1 3 6 4 2 3 5 7 10 8 14 5 60 1 3 4 6 55 64 10 15 16 17 20 25 30 32 33 35 40 45 48 49 50 1 10 12 5 1 15 13 24 20 5 10 15 5 1 1 1 1 3 4 6 3 4 6 3 4 6 8 9 8 9 16 16 1 10 15 1 3 4 5 1 1 3 4 6 4 8 5 1 5 4 3 5 1 8 16 10...

Page 33: ...5 110 115 120 125 128 1 5 10 12 13 15 20 24 5 1 1 1 3 6 4 2 3 5 7 10 8 14 5 60 1 3 4 6 55 64 10 15 16 17 20 25 30 32 33 35 40 45 48 49 50 1 10 12 5 1 15 13 24 20 1 3 4 5 1 1 3 4 6 4 8 5 1 5 4 3 5 1 8 16 10 15 1 4 5 8 9 MAIN PWB A BOTTOM VIEW OPTICAL LINE IN PHONES J701 J703A J801 DC IN 5V BATTERY BATTERY TERMINAL 217 BATTERY TERMINAL 212 LID OPEN DISC PROTECT C D 0 4A DC60V 1 1A X0039AW To Serial ...

Page 34: ...9 IC203 R220 R218 R204 L100 C208 L101 R161 C201 C100 C203 C165 C103 C102 R135 R136 CN101 R133 R131 R137 R134 R132 R138 C114 R111 C111 C112 IC101 SW456 C107 C106 L171 C108 R112 C109 C131 C171 C110 R140 R139 C113 C132 C133 5 10 12 13 15 20 25 24 25 30 35 36 37 40 45 48 1 5 10 15 20 25 26 30 35 40 45 50 1 1 7 11 51 55 60 65 70 75 76 80 85 90 95 100 1 4 5 8 1 2 3 4 1 3 5 4 1 2 4 3 1 1 5 10 15 20 22 3 ...

Page 35: ...NIT 218 OPTICAL PICKUP 1 P34 3 D TO MAIN PWB P34 3 F TO MAIN PWB CN482 P34 2 D TO MAIN PWB CN601 CN101 SPINDLE MOTOR LIFT MOTOR MECHANISM FLEXIBLE PWB 15 MAGNETIC HEAD 16 SLED MOTOR M901 M903 M902 Figure 35 WIRING SIDE OF P W BOARD 4 4 ...

Page 36: ... 41 42 43 44 45 46 47 48 39 1 2 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 52 53 55 56 57 58 59 60 61 62 63 64 54 49 50 51 3 1 2 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 3 1 20V 2 53V 1 27V 0V 2 53V 0V 1 28V 1 28V 1 28V 1 28V 1 28V 1 28V 1 28V 1 56V 0V 0V 0V 0V 1 27V 0V 0V 0V 0V 0V 0V 0V 2 53V 2 53V 0V 2 42V 0V 1 96V 1 25V 1 25V 1 2...

Page 37: ...thiing OFF BW FULL CH1 0 000V CH2 0 00V Main 1K Zoom 1K CH3 0 00V CH4 0 00V Trigger Mode AUTO Type EDGE CH1 Detay 0 0ns Hold OFF MINIMUM T TP201 EFMMON Stopped CH1 2V DC 10 1 500ms div 500ms div 1 MORM 200MS s 9 1994 12 15 08 57 26 Filter Offset Record Length Smoothiing OFF BW FULL CH1 0 00V CH2 0 00V Main 10K Zoom 10K CH3 0 000V CH4 0 0V Trigger Mode NORMAL Type EDGE CH1 Detay 0 0ns Hold OFF MINI...

Page 38: ...ned below Turn the power off Gently clean the lens with a lens cleaning tissue and a small amount of lens cleaner on the market Do not touch the lens with the bare hand Is the power supply turned on when the main unit button is pressed No Perform the check stated in item Power is not turned on when the PLAY button is pressed Perform the check stated in item Abnormal display No Yes Does the display...

Page 39: ...t Is PWM signal output from IC501 pins 68 69 72 73 Check headphones jack and periphery of headphone Although the playback time display is acting no sound is given during playback in the normal mode The spindle motor fails to run Does the head move No Does the waveform appear on the IC201 pins 26 and 27 after TEST mode AUTO2 completion and in this state Check the IC201 periphery Does waveform appea...

Page 40: ...of the pins 97 100 101 102 of IC201 No Check whether the audio signal line between IC501 and J701 is defective Check whether input waveform is observed on the pins 3 and 4 of IC501 Yes Check voltage of pins 89 and 90 of IC201 pins 17 18 20 and 21 of IC601 pins 8 and 9 of CN601 Check whether disc is record inhibited Does the RF waveform appear at TP201 when recording Playback is performed Check whe...

Page 41: ...output 25 P7_3 CHGON Output Battery charge ON OFF control output 26 P7_2 TA1OUT Output Reserve 27 P7_1 TB5IN Output Reserve 28 P7_0 TA0OUT Output Reserve 29 P6_7 TXD1 DSPDAT Output Unit indication data output 30 P6_6 RXD1 DSPSTB Output Main unit display strobe output 31 P6_5 CLK1 DSPSCK Output Unit indication data clock output 32 P6_4 TEST0 Input Test mode setting input 0 33 P6_3 TXD0 RMDAT Output...

Page 42: ...put DC IN detection 74 P1_4 _XRST Output System LSI hard reset output 75 P1_3 PCNT1 Output Main DC DC converter ON OFF control 76 P1_2 SYRS Output System LSI register selection output 77 P1_1 _SYRD Output System LSI read enable output 78 P1_0 _SYWR Output System LSI write enable output 79 P0_7 SYD7 Input Output System LSI parallel data bus 80 P0_6 SYD6 Input Output 81 P0_5 SYD5 Input Output 82 P0_...

Page 43: ...ad raising lowering control output 1 See the separate table 2 89 EXPORT5 LDCNT2 Output Recording head raising lowering control output 2 See the separate table 2 105 EXPORT3 HDON Output Recording head current control output H Record electric current 106 EXPORT2 OPTCNT Output Optical digital input circuit control H Circuit operation ON 107 EXPORT0 DAPON Output D A converter operation control output ...

Page 44: ...on with H level input 16 CLK Reference clock input terminal for logic operations Enter a frequency 32 times or 64 times as high as the spindle PWM frequency 17 IN3F H bridge 3 logic input terminal 18 IN3R 19 VS3 H bridge 3 power supply terminal The capacitor is connected to the GND terminal 20 OUT3F H bridge 3 forward output terminal 21 OUT3R H bridge 3 reverse output terminal 22 PGND3 H bridge 3 ...

Page 45: ... thread U phase output terminal 52 SVO 3 phase thread V phase output terminal 53 SVCO Position detection comparator output terminal in the thread driver section 54 SWCO Position detection comparator output terminal in the thread driver section 55 SWO 3 phase thread W phase output terminal 56 OUT4 Half bridge output terminal 57 VS4 Power supply terminal for half bridge section The capacitor is conn...

Page 46: ...ted 7 A10 Address input 8 11 A0 A3 Address input 12 Vcc Power supply 2 6V 13 GND Ground 0V 14 19 A4 A9 Address input 20 OE Output enable 21 CAS Column address strobe 22 I O3 Data input data output 23 I O4 Data input data output 24 GND Ground 0V IC202 RH iX2960AFZZ 16M Bit D RAM IX2960AF In this unit the terminal with asterisk mark is open terminal which is not connected to the outside ...

Page 47: ...indrical type without lead wire VC MN Cylindrical type without lead wire VC TV Square type without lead wire VC TQ Square type without lead wire VC CY Square type without lead wire VC CZ Square type without lead wire VC J The 13th character represents capacity difference J 5 K 10 M 20 N 30 C 0 25 pF D 0 5 pF Z 80 20 If there are no indications for the electrolytic capacitors error is 20 Resistors ...

Page 48: ...801 RCILZ0027AWZZ J AD 100 MHz Tip Impeder L841 RCILC0358AFZZ J AC 47 µH Choke L851 RCILC0026AWZZ J AE 10 µH L860 VPCBM101K0000 J AC 100 µH VIBRATORS XL201 RCRSC0028AFZZ J AH Crystal 33 8688 MHz XL401 RCRM 0050AWZZ J AE Ceramic Osillator 4 MHz CAPACITORS C100 VCSAFA0JJ106M J AD 10 µF 6 3V Electrolytic Tantalum C102 103 VCKYCY0JB105K J AC 1 µF 6 3V C106 VCKYCY0JB105K J AC 1 µF 6 3V C107 VCKYCZ1CB33...

Page 49: ...S CY1JB104J J AA 100 kohm 1 16W R464 VRS CY1JB224J J AA 220 kohms 1 16W R465 VRS CY1JB104J J AA 100 kohm 1 16W R467 VRS CY1JB223J J AA 22 kohms 1 16W R481 VRS CY1JB333F J AA 33 kohms 1 16W R482 483 VRS CY1JB183F J AA 18 kohms 1 16W R501 504 VRS CY1JB123J J AA 12 kohms 1 16W R511 VRS CY1JB102J J AA 1 kohm 1 16W R602 VRS CY1JB563J J AA 56 kohms 1 16W R603 604 VRS CY1JB334J J AA 330 kohms 1 16W R606 ...

Page 50: ...d Hong Kong 221 TLABN0234AW01 J AB Label Serial No S For Europe 221 TLABN0234AW02 J AB Label Serial No S For Sweden 221 TLABN0234AW03 J AB Label Serial No S For U K 221 TLABN0234AW04 J AB Label Serial No S For Korea 221 TLABN0234AW05 J AB Label Serial No S For Hong Kong 221 TLABN0234AW06 J AB Label Serial No S Except for Europe U K Korea Australia New Zealand Thailand Hong Kong 221 TLABN0234AW07 J...

Page 51: ...MD MT270H A B C D E F G H 1 2 3 4 5 6 Figure 4 MD MECHANISM EXPLODED VIEW 4 M901 M903 M902 16 503x2 501 9 502 2 1 14 505 8 11 13 504 506x2 5 3 4 6 507 10 17 7 507 12 501x3 15 ...

Page 52: ...A B C D E F G H 1 2 3 4 5 6 Figure 5 CABINET EXPLODED VIEW 5 MD MECHANISM 201 605 603 603 603x2 602x2 604 601 602x2 602 603x2 210 203 219 204 216 220 202 205 206 218 214 PWB A 212 217 221 211 215 208 209 207 213 ...

Page 53: ...se K SPAKC1541AWZZ 4 Packing Case S SPAKC1551AWZZ 5 Space Pad SPAKZ0490AWZZ 6 Polyethylene Bag SSAKH0033AWZZ 7 Service Card TCADS0005AWZZ 8 Warranty Card TGANE0013AWZZ 9 Operation Manual TINSE0488AWZZ 10 Quick Guide TINSE0489AWZZ 12 Label Bar Code K TLABE0711AWZZ 12 Label Bar Code S TLABE0726AWZZ 14 Label Serial No TLABN0092AWZZ Setting position of switches and knobs UNIT HOLD ...

Page 54: ...MD MT270H M E M O ...

Page 55: ...MD MT270H M E M O ...

Page 56: ...ima Hiroshima 739 0192 Japan SG EX COPYRIGHT 2002 BY SHARP CORPORATION ALL RIGHTS RESERVED No part of this publication may be reproduced stored in a retrieval system or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without prior written permission of the publisher ...

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