Table of Contents
Advertisement
2. The bell does not ring & page does not ring.
Can the base and
handset be connected.
OK
Press handset Dial Key
while in Talk Mode,
Can key touch sound be
heard from the ringer.
OK
When the PAGE SW of
the base is pressed, does
PIN21 of BU3 change
from high to low.
OK
Check the BU3 and the
surrounding circuit of
BU3.
Check whether the base &
NG
handset RX and TX-Loop-V
are OK.
OK
Check the base TX Power
OK
Check the base TX data
deviation
OK
Check the handset RX
Sensitivity
OK
Check RX data pulse wave
on RX-DATA
When the key of the
NG
handset is pressed, can the
pulse output at PIN20 of
HU3.
OK
At the HD6 anoe, Can the
pulse wave be seen.
OK
Ringer is defective.
NG
Check the BS3, BR69 and
BR77.
17
By using voltmeter, check the base &
NG
handset PLL circuit (BU10/HU3 and
surrounding circuit of BU10/HU3)
NG
By using voltmeter, check
the base TX circuit.
NG
By using voltmeter, check
BU5 and BU6
Check the handset RX RF
NG
circuit (HU1) as well as
well as HQ2.
NG
Check HU6D and
surrounding circuit of HU6
NG
Check HU3 circuit.
NG
Check HQ14, HQ17 and
HR139.
Advertisement
Table of Contents
