TM8100/TM8200 Service Manual
Frequency Synthesizer Fault Finding
193
© Tait Electronics Limited
June 2006
Figure 9.6
Test and measurement points for the synthesizer PLL and loop filter
FEEDBACK
VOL
T
AGE
PIN
6
O
F
IC505
FEEDBACK
VOL
T
AGE
PIN
6
OF
IC505
PIN
16
OF
IC503
PIN
16
OF
IC503
P
IN5O
F
IC505
PIN
5
OF
IC505
P
IN8O
F
IC503
PIN
8
OF
IC503
PIN
14
OF
IC503
PIN
14
OF
IC503
PIN
10
OF
IC503
PIN
10
OF
IC503
COLLECT
OR
OF
Q505
COLLECT
OR
OF
Q505
OUTPUT
OF
LOOP
FIL
TER
A
T
C565
OUTPUT
OF
LOOP
FIL
TER
A
T
C565
TP503
(JUNCTION
OF
R566
AND
R570)
TP503
(JUNCTION
OF
R566
AND
R570)
SIGNA
L
TYPES
RF
ANALOG
CLOCK
DIGIT
AL
PLL
LOOP
FIL
TER
AND
SUMMER
FIL
TERING
OF
SUPPL
Y
FOR
PLL
AND
LOOP
FIL
TER
FCL
VCO
CIRCUITR
Y
FREQUENCY
SYNTHESIZER
PLL
FEEDBACK
CODEC
AND
AUDIO
CIRCUITR
Y
DIGIT
AL
BOARD
DIG
SYN
F
AST
SYN
LOCK
DIG
SYN
EN
INVER
TER
VIA
T
O
CHECK
DIG
SYN
F
AST
VIA
T
O
CHECK
DIG
SYN
F
AST
VIA
T
O
CHECK
DIG
SYN
EN
VIA
T
O
CHECK
DIG
SYN
EN
VIA
T
O
CHECK
SYN
LOCK
VIA
T
O
CHECK
SYN
LOCK
R105
R104
JUNCTION
OF
C541
AND
R547
JUNCTION
OF
C541
AND
R547
R549
R544
+3V0
AN
L506
3V
SUPPL
Y
R568
R542
L102
REFERENCE
FREQUENCY
C536
SYN
CDC
LFV
CDC
VCO
MOD
SUPPL
Y
FOR
CHARGE
PUMP
REFERENCE
VOL
T
AGE
OUTPUT
PLL
LOOP
VOL
T
AGE
Summary of Contents for TM8235
Page 1: ...TM8100 mobiles TM8200 mobiles Service Manual MMA 00005 04 Issue 4 June 2006...
Page 10: ...10 TM8100 TM8200 Service Manual Tait Electronics Limited June 2006...
Page 62: ...62 Description TM8100 TM8200 Service Manual Tait Electronics Limited June 2006...
Page 148: ...148 Disassembly and Reassembly TM8100 TM8200 Service Manual Tait Electronics Limited June 2006...
Page 162: ...162 Servicing Procedures TM8100 TM8200 Service Manual Tait Electronics Limited June 2006...
Page 178: ...178 Interface Fault Finding TM8100 TM8200 Service Manual Tait Electronics Limited June 2006...
Page 258: ...258 Receiver Fault Finding TM8100 TM8200 Service Manual Tait Electronics Limited June 2006...
Page 446: ...446 Spare Parts TM8100 TM8200 Service Manual Tait Electronics Limited June 2006...
