97
Prestigio Cavaliere 141
Technical Service Manual
8.1 No Power:
When the power button is pressed, nothing happens ,power indicator does not light up.
U14
P29
+S1.8V
U504
+CPU_VCCVID
P3
L528
P9
L532
L523
+VCLK_48
L529
+VCLK_PCI
L521
+VCLK_AGP
L22
+VCLK_CPU
L527
+VCLK_SDRAM
L21
+VCLK_VDDA
P17
L31
IVDD_AUX
L519
C1XAVDD
P5
L520
C4XAVDD
P5
L512
A4XAVDD
P5
L513
A1XAVDD
P5
L517
SDAVDD
P6
L518
DDRAVDD
P6
L516
Z1XAVDD
P7
L515
Z4XAVDD
P7
L514
DCLKAVDD
P7
L511
ECLKAVDD
P7
L508
TVPLL_VCC
P10
L509
TVPLL_VCC
P10
L5
VDDT
P10
L510
P10
L506
+LVDD4/5
P10
L503
+LVDD2
P10
L505
+LVDD0/1
P10
L507
+LPLL_VDD
P10
Q1
+3V_LCDVCC
P14
L535
L534
SZ1XAVDD
P15
SZ4XAVDD
P15
: Page 32 on circuit diagram.
: Through by part PU501.
Note:
P32
PU501
+5V_P
JO2
JO3
P32
+S5V
+5V
U501,L505
+VCC_USB_0
P3
U501,L504
+VCC_USB_1
P3
U502,L513
+VCC_USB_2
P3
U502,L512
+VCC_USB_3
PU15
+1.25V_P
P3
P32
+5V_CDROM
RVDD/LVDD
CARD_VCC
U502
DAC_VDD
P10
JS503
+5V_HDD
P18
JS504
P18
R727
VA
P20
P21
L540
P22
JO508
+1.25V
P32
P29
+3V_P
PGUP
JO4,JO5
+S3V
P32
U5
+3V
P29
L538
MII_AVDD
P16
L29
USBVDD
P17
P4
P4
+VCH_DVDD
U1
PGUP
P9
P9
P9
P9
P9
P9
P9
+VCLK_REF
+VCLK_Z
L540