Sharp XL-DAB (serv.man2) Service Manual ▷ View online
XL-DAB151PH
3 – 2
Although a CD is inserted and the cover is
closed, "NO DISC" is displayed.
closed, "NO DISC" is displayed.
(1) Focus-RF system check.
Press the Tray CD Eject Button without inserting a disc,
and try starting the playback operation.
and try starting the playback operation.
1. Does the pickup move to the PICKUP-IN Switch
position?
position?
No
No
No
No
No
Sled motor.
Yes
2. Does the focus (lens) move up and down?
(Waveform drawing Figure 1)
(Waveform drawing Figure 1)
3. Is the laser lit ?
Check the focus peripheral circuit.
Yes
Check the laser diode at U5 pin 80 and R128 peripheral circuit.
Yes
4. Is the turntable rotating?
Spindle motor.
Pins 64,65 on U5 and Pins 1,2,26,27. Check the
laser diode on U5 Pins 80 and R128 peripheral circuit.
laser diode on U5 Pins 80 and R128 peripheral circuit.
When a disc is loaded, start playback operation.
1. Is focus servo activated?
(Waveform drawing Figure 2)
(Waveform drawing Figure 2)
FO
1
65
U5
Figure 1
1
65
U5
FO
RA
2
64
U5
Figure 2
XL-DAB151PH
3 – 3
Check the TE waveform at pin 64 on U5.
(2) Tracking system check.
If the waveform shown in Figure 1 appears and soon after NO
DISC appears?
DISC appears?
Yes
The tracking servo is not activated.
Check the peripheral circuits at pins 64 on U5, and CN3.
Check the peripheral circuits at pins 64 on U5, and CN3.
No
"Initialization" is possible, but play is not possible?
Yes
A normal jump operation cannot be completed or the begin-
ning of the track cannot be found.
Check the around pin 63 on U5.
ning of the track cannot be found.
Check the around pin 63 on U5.
No
"Initialization" is not possible.
Data cannot be read. Check the Data (Pin46 on U5) system.
(3) Spin system check.
Press the OPEN/CLOSE switch without inserting a disc, and
then try starting the play operation.
then try starting the play operation.
1. The turntable rotates a little?
(Waveform drawing Figure 3)
(Waveform drawing Figure 3)
Yes
The spin driver circuit is OK.
No
Check around pin 68 on U5, pins 5 and 6 on J13.
2. The turntable doesn't rotate.
MOTO2
FO
1
65
U5
3
68
U5
Figure 3
XL-DAB151PH
4 – 1
CHAPTER 4. MAJOR PART DRAWING
[1] Function Table Of IC
IC1 92L12000525601 : Multimedia with 24bit Audio Accelerator (1/5)
Pin
No.
No.
NAME
Type
(Input/Output/
Power)
Description
1
PDVDD
Power
GPIO Power Input
2
SDRAM_WE/GPIO1[15]
Input/Output
SDRAM_WE
3
A4 / GPIO 1[21]
Input/Output
Address
4
A5 / GPIO 1[22]
Input/Output
Address
5
A6 / GPIO 1[23]
Input/Output
Address
6
A7 / GPIO 1[24]
Input/Output
Address
7
A8 / GPIO 1[25]
Input/Output
Address
8
A9 / GPIO 1[26]
Input/Output
Address
9
A21 / SPI_DATA0
Input/Output
Address
10
A22 / SPI_DATA1
Input/Output
Address
11
A19 / SPI_CS
Input/Output
Address
12
A20 / SPI_CLK
Input/Output
Address
13
PDVSS
Power
Ground
14
PDVDD
Power
Input / Output Power Supply
15
A23 / SPI_DATA2
Input/Output
Address
16
A24 / SPI_DATA3
Input/Output
Address
17
A11 / GPIO 1[28]
Input/Output
Address
18
A12 / GPIO 1[29]
Input/Output
Output
Address
19
SDRAM_CLK
SDRAM_CLK
20
PVDD_1V8
Power
Core 1V8
21
A16 / UDOM / GPIO 2[1]
Input/Output
Address
22
A3 / GPIO 1[20]
Input/Output
Address
23
A2 / GPIO 1[19]
Input/Output
Address
24
A1 / GPIO 1[18]
Input/Output
Address
25
A0 / GPIO 1[17]
Input/Output
Address
26
PDVDD
Power
Input / Output Power Supply
27
A10 / GPIO 1[27]
Input/Output
Address
28
A14 / Bank 1 / GPIO 1[31]
Input/Output
Address
29
A13 / Bank 0 / GPIO 1[30]
Input/Output
Address
30
SDRAM_CS / GPIO 1[13]
Input/Output
SDRAM_CS
31
A18 / RAS / GPIO 2[3]
Input/Output
Address
32
A17 / CAS / GPIO 2[2]
Input/Output
Address
33
A15 / LDQM / GPIO 2[0]
Input/Output
Address
34
GPIO 1[0] / TX
Input/Output
GP Input/Output
35
GPIO 1[1] / RX
Input/Output
GP Input/Output
36
GPIO 1[3] / SPI_MOSI
Input/Output
GP Input/Output
37
PVDD
Power
Input / Output Power Supply
38
GPIO 1[2] / SPI_CLK
Input/Output
GP Input/Output
39
GPIO 1[5] / SPI_CS0
Input/Output
GP Input/Output
40
GPIO 1[4] / SPI_MIS0
Input/Output
GP Input/Output
41
D7 / GPIO2[11]
Input/Output
Data
42
D6 / GPIO2[10]
Input/Output
Data
43
D5 / GPIO2[9]
Input/Output
Data
44
D4 / GPIO2[8]
Input/Output
Data
45
D3 / GPIO2[7]
Input/Output
Data
46
D2 / GPIO2[6]
Input/Output
Data
47
D1 / GPIO2[5]
Input/Output
Data
48
GPIO 1[6] / SPI_CS1
Input/Output
GP Input/Output
49
PVDD_1V8
Power
Core 1V8
50
PDVDD
Power
Input / Output Power Supply
51
D0 / GPIO2[4]
Input/Output
Data
52
SDRAM_CLKE / GPIO 1[11]
Input/Output
SDRAM_CLKE
53
SDRAM_CS / GPIO 1[14]
Input/Output
SDRAM_CS
XL-DAB151PH
4 – 2
IC1 92L12000525601 : Multimedia with 24bit Audio Accelerator (2/5)
Pin
No.
No.
NAME
Type
(Input/Output/
Power)
Description
54
SDRAM_OE / GPIO 1[16]
Input/Output
SDRAM_OE
55
D8 / GPIO2[12]
Input/Output
Data
56
D9 / GPIO2[13]
Input/Output
Data
57
D10 / GPIO2[14]
Input/Output
Data
58
D11 / GPIO2[15]
Input/Output
Data
59
D12 / GPIO2[16]
Input/Output
Data
60
D13 / GPIO2[17]
Input/Output
Data
61
GPIO 0[2] / LCD_DEN
Input/Output
GP Input/Output
62
PVDD
Input
Input / Output Supply
63
D14 / GPIO2[18]
Input/Output
Data
64
D15 / GPIO2[19]
Input/Output
Data
65
GPIO 0[4] / LCD_D0
Input/Output
GP Input/Output
66
GPIO 0[5] / LCD_D1
Input/Output
GP Input/Output
67
GPIO 0[6] / LCD_D2
Input/Output
GP Input/Output
68
GPIO 0[7] / LCD_D3
Input/Output
GP Input/Output
69
GPIO 0[8] / LCD_D4
Input/Output
GP Input/Output
70
GPIO 0[9] / LCD_D5
Input/Output
GP Input/Output
71
GPIO 0[10] / LCD_D6
Input/Output
GP Input/Output
72
GPIO 0[11] / LCD_D7
Input/Output
GP Input/Output
73
GPIO 0[1] / LCD_VSYNC
Input/Output
GP Input/Output
74
GPIO 0[1] / LCD_HSYNC
Input/Output
GP Input/Output
75
GPIO 0[3] / DOT_CLK
Input/Output
GP Input/Output
76
GPIO 0[19] / SD_WP
Input/Output
GP Input/Output
77
GPIO 0[15] / SD_DATA1
Input/Output
GP Input/Output
78
GPIO 0[14] / SD_DATA0
Input/Output
GP Input/Output
79
GPIO 0[12] / SD_CLK
Input/Output
GP Input/Output
80
GPIO 0[18] / SD_DETECT
Input/Output
GP Input/Output
81
GPIO 0[13] / SD_CMD
Input/Output
GP Input/Output
82
GPIO 0[17] / SD_DATA3
Input/Output
GP Input/Output
83
PVDD_1V8
Input
Core 1V8
84
GPIO 0[16] / SD_DATA2
Input/Output
GP Input/Output
85
PDVDD
Power
Input / Output Power Supply
86
GPIO 1[8] / SCL
Input/Output
GP Input/Output (Open drain bi-directional Input / Output)
87
GPIO 1[7] / SDA
Input/Output
GP Input/Output (Open drain bi-directional Input / Output)
88
GPIO 0[23] / 12S0_DOUT
Input/Output
GP Input/Output
89
GPIO 0[20] / 12S0_BCLK
Input/Output
GP Input/Output
90
GPIO 0[21] / 12S0_LRCK
Input/Output
GP Input/Output
91
GPIO 0[22] / 12S0_DIN
Input/Output
GP Input/Output
92
GPIO 0[24] / CD_EF
Input/Output
GP Input/Output
93
GPIO 0[26] / 12S1_BCLK
Input/Output
GP Input/Output
94
GPIO 0[27] / 12S1_LRCK
Input/Output
GP Input/Output
95
GPIO 0[29] / 12S1_DOUT
Input/Output
GP Input/Output
96
GPIO 0[30] / 12S1_MCLK-IO
Input/Output
GP Input/Output
97
AGND
Power
Ground
98
USB_DP
Input/Output
USB_DP
99
USB_DM
Input/Output
USB_DM
100
VCCA_USB3V3
Input/Output
USB-3v3 Supply
101
USB_10K_REF
Output
10K_Current_Ref
102
USB_VDDA_1V8
USB_1V8
103
USB_VBUS
Input
USB_1V8
104
USB_ID
Input
USB_ID
105
ADC_CH0
Analogue
ADC_CH0
106
ADC_CH1
Analogue
ADC_CH1
107
ADC_CH2
Analogue
ADC_CH2
108
AVDD_PLL_3V3
Input
PLL_Power Supply
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