96
Prestigio Cavaliere 141
Technical Service Manual
8.1 No Power:
When the power button is pressed, nothing happens ,power indicator does not light up.
Main Voltage Map
Power In
P1
PJ501
PF2,PL3,PL4
PR19
P3
PWR_VDDIN
J1
J3
F4,U15
P28
L30
L28
P26
H8_AVREF
H8_VDDA
VDD5
Q23
P28
VDD5S
Q18
VDD3
U18
P28
P28
PQ8,PQ9
ADINP
P1
PD10,PL5,PQ2
PL501,PU2,PU8
PD12
Battery
P1
J501
P1
D/VMAIN
PD13,PD14,PD15
(Charge)
(Discharge)
PQ13-PQ16
PD16
J1 J3
8677 DD BOARD
PL1,PL2,PU501,PU1~PU10
+CPU_CORE
P31
PU502,PU13,PU14
+2.5V_P
P30
JO8,JO9
+2.5V_DDR
P32
(Discharge)
SVDDZCMP
L526
+VCLK_DDR
P9
L525
+VCLK_DDRA
R94
R97
P9
DDRVREFA
P6
R95
R96
DDRVREFB
P6
R132
R130
+VREF_DDR
P11
R125
R120
+VREF_DIMM
P12
PU502,PU11
PU12
+1.8V_P
P30
JO6
+1.8V
P32
R79
R80
ZVREF
P7
L13
VDDZCMP
P7
L9
DACAVDD1
P7
R647
R648
SZVREF
P15
L27
P15
L539
IDEAVDD
P15
PU9,PU4,PU6
+3V_P
P4
PU9,PU3,PU5
+5V_P
P4
PU9,PU3,PU5
PU1,
PT501
+12V_P
P4
JO1
+S12V
P32
Q4
+12V
P29
PGDN
PGDN
: Page 12 on circuit diagram.
: Through by part PU502.
Note:
P12
PU502
U15 Q21
+S5V