Component Placement - Nokia RM-761 Service Manual

RM-761; RM-799; RM-800
RF Troubleshooting
Signal Name
Clocking
SYS_CLK
SLEEP_CLK
Bluetooth Control
BT_RESETX
CLK_REQ
UART_WAKEUP
BT_WAKEUP
Bluetooth Communication
UART_RX
UART_CTS
UART_TX
UART_RTS
Bluetooth Audio Interface
PCM_IN
PCM_OUT
PCM_SYNC
PCM_CLK
Power
VIO
VBAT

Component placement

The Bluetooth ASIC, is checked when troubleshooting (if supported).
The placement of Bluetooth and test probe points is shown below.
The Bluetooth antenna is product specific (PWB track, SMD antenna, clip on antenna, or antenna integrated
into phone covers) and is typically located near the side of the PWB.
Issue 1
I/O
I
I
I
O
O
I
I
I
O
O
I
O
I
I
P
P
COMPANY CONFIDENTIAL
Copyright © 2011 Nokia. All rights reserved.
Function
Cellular engine RF clock
(26.0 MHz)
Cellular engine sleep
clock (32.768kHz)
Bluetooth ASIC reset
Signal from Bluetooth
ASIC to indicate that
SYSCLK is required
Signal from Bluetooth
ASIC to wakeup host
engine
Signal from host engine
to wakeup Bluetooth
ASIC
UART interface to/from
host engine
PCM interface to/from
host engine
Cellular engine I/O
supply
Phone battery power
Notes
Alternative connection
to 1.8V supply could be
used
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