|
88
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KX-F910BX
I
NO
YES
YES
Check signal line.
Base Unit: Approx 5V
Handset: Approx 4V
High level
TX VCO voltage
Base Unit: 1.5V ± 1V
Handset: 1.5V ± 1V
Check TX VCO voltage,
VTXP signal and VTX signal.
NO
Check TX VCO circuit.
Check RST. SI, CPS
and LD signal lines.
TX VCO voltage OK?
RF unit
(VTXP = "high"?)
(VTX = "high"?)
(page 87)
A
G
NO
YES
YES
Check VRX signal line.
Base Unit: Approx 5V
Handset: Approx 4V
High level
TX VCO voltage
Base Unit: 1.5V ± 1V
Handset: 1.5V ± 1V
Check RX VCO voltage and
VRX signal.
NO
Check RX VCO circuit.
Check RST, SI, CPS
and LD signal lines.
RX VCO voltage OK?
RF unit
(VRX = "high"?)
(page 87)
C
YES
TX VCO voltage
Base Unit:1.5V ± 1V
(see pages 110
‘
112)
Handset: 1.5V ± 1V
(see pages 107
‘
109)
Check TX VCO voltage.
NO
Check TX VCO circuit.
Check RST, SI, CPS
and LD signal lines.
TX VCO voltage OK?
(page 87)
B
H
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