Cpu Decoupling - EUROCOM D870P Series Service Manual

CPU Decoupling

Put the cap on the North side of the processor
VCORE
C475 C513 C471 C63 C493
10U(0805) 10U(0805) 10U(0805) 10U(0805) 10U(0805)
VCORE
C52 C65 C41 C473 C515
0.47U 0.47U 0.47U 0.47U 0.47U
Put the cap on the South side of the processor
VCORE
C114 C121 C122 C571
10U(0805) 10U(0805) 10U(0805) 10U(0805)
VCORE
C54 C55 C64 C62 C53 C38
0.47U 0.47U 0.47U 0.47U 0.47U 0.47U
Put the cap in the processor cavity
VCORE
C66 C585 C586 C587 C588
10U(0805) 10U(0805) 10U(0805) 10U(0805) 10U(0805)
CLOSE TO SO DIMM 0
+2.5V
C205 C194 C193 C191
0.1U_X7R 0.1U_X7R 0.1U_X7R 0.1U_X7R
+2.5V
C207 C189 C188 C186
0.1U_X7R 0.1U_X7R 0.1U_X7R 0.1U_X7R
CLOSE TO SO DIMM 1
+2.5V
C214 C732 C257
0.1U_X7R 0.1U_X7R 0.1U_X7R
+2.5V
C278 C275 C758
0.1U_X7R 0.1U_X7R 0.1U_X7R
C492 C512 C494 C514 C496 C516
0.47U 0.47U 0.47U 0.47U 0.47U 0.47U
C36 C37 C50 C51 C60 C61 C39
C40
0.47U 0.47U 0.47U 0.47U 0.47U 0.47U 0.47U 0.47U
C589 C472 C525
10U(0805) 1U_X7R 1U_X7R
C195 C183 C187
C202 C192
1U_0805_X7R 1U_0805_X7R 1U_0805_X7R
10U(0805) 10U(0805)
C182 C185 C181 C204 C190 + C201
0.1U_X7R 0.1U_X7R 10U(0805) 10U(0805) 10U(0805) 220U(D)
POSCAP
C280 C274 C279 C281
C277
0.1U_X7R 1U_0805_X7R 1U_0805_X7R 10U(0805)
1U_0805_X7R
+
C276 C734 C731 C730 C723 C273
0.1U_X7R 0.1U_X7R 0.1U_X7R 10U(0805) 10U(0805) 220U(D)
POSCAP
BACK SIDE CPU DECOUPING
VCORE
C495 C497 C517 C511
10U(0805) 10U(0805) 10U(0805) 10U(0805)
C33 C34
0.47U 0.47U
+ C498
330U/3V_D
POSCAP
+2.5V [7,9,10,35,36]
VCORE [2,3,5,18,19,33]
Schematic Diagrams
C584 C608 C131
10U(0805) 10U(0805) 10U(0805)
Sheet 4 of 39
CPU Decoupling
B - 5