Pcb; Technical Description - Ericsson EF738 Service Manual

Technical Description

PCB

The printed circuit board is a 6-layer PCB where all components are located in
layer 1 (primary side) and layer 6 (secondary side).
Layers 2 and 5 are ground planes and layers 3 and 4 are used for signal conducting.
10
Primary Side
ANT
DUPLEXER
RECEIVER
VCO
MALIN
IF PART
BERT-
INDY
GUSTAV
EE-
FLASH
P R O M
SYSTEM CONNECTOR
VOL
VOL
VCTCXO
BAT
C O N
MIA
ANTON
Figure 4: PCB LayOut
Secondary Side
BUZZER
TRANSMITTER
KEYPAD
SYSTEM CONNECTOR