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KX-FP300E
2.3.3.5. Analog Board Section (Change from original page 75.)
This chapter provides the testing procedures required for the analog parts. A signal route to be tested is determined
depending upon purposes. For example, the handset TX route begins at the handset microphone and signal is output to the
telephone line. The signal mainly flowing on this route is analog. You can trace the signal with an oscilloscope. The signal
flow on each route is shown in the Check Sheet here. If you find a specific problem in the unit, for example if you cannot
communicate with the H/S, trace that signal route locally with the following Check Sheet and locate the faulty point.
(SYMPTOM)
ITEMS TO CHECK
TEL LINE-T1-R59-C44-IC10(6-7)-J33-C56-C57-R80-R150-C113-IC5(59-41)-C100-
MONITOR Rx
R139-IC5(40-38)-C91-R132-IC3(4-5,8)-Speaker
MIC---L35-R135-C94---IC5(52,54-63)-C53-R73-IC10(2-1)-C37-R58-R57-T1-TEL LINE
Handset Tx
Handset Rx
TEL LINE -T1-R59-C44-IC10(6-7)-J33-C56-C57-R80-R150-C113-IC5(59-45,56)
---C84-L37---SPEAKER
{IC505(44)-C593-R610-IC517(6-7)-C604-CN501(10)}-CN7(10)-C126-R155-IC5(76-41)-C100-R139-
Speaker
DTMF
IC5(40-38) -C91-R132-IC3(4-5,8)-Speaker
monitor
Handset
{IC505(44)-C593-R610-IC517(6-7)-C604-CN501(10)}-CN7(10)-C126-R155-IC5(76-45,46)
{IC505(44)-C593-R610-IC517(6-7)-C604-CN501(10)}-CN7(10)-C126-R159-IC5(73-63)-C53-R73-
DTMF for TEL LINE
IC10(2-1)-C37-R58-R57-T1-TEL LINE
FAX Tx
Dummy Ring
{IC501(39)-R565-R572-C631-CN502(1)}-CN8(1)-R162-C120-IC5(78-63)-C53-R73-IC10(2-1)-C37-R58-R57-
Back tone
T1-TEL LINE
(TONE 2)
(TONE 2)
{IC501(39)-R565-R572-C631-CN502(1)}-CN8(1)-R162-C120-IC5(78-41)-C100-R139-IC5(40-38)-C91-
RINGING
R132-IC3(4-5,8)-SPEAKER
(TONE 1)
{IC501(38)-R567-R573-C564-CN501(1)}-CN7(11)-R161-C119-IC5(77-41)-C100-R139-IC5(40-38)-C91-
Alarm / Beep /
R132-IC3(4-5,8)-SPEAKER
Key tone
TEL LINE-T1-R59-C44-IC10(6-7)-J33-C56-C59-R85-R89-C64-IC2(1-2)-C68-
FAX Rx
CN7(9)-{CN501(9)-C701-IC801(3-4)-C809-R810-IC803(6-7)-J607-C603-R617-IC517(2-1)-C596-R605-
IC505(45)}
TEL LINE-T2-C115-R154-IC5(61-67)-C116-R151-IC5(68-70)-C154-D37-R182-IC15(2-1)
VOX
-R189-CN9(3)-{CN503(3)-R716-IC501(45)}
TEL LINE-T2-C115-R154-IC5(61-35)-R180-C150-IC4(1-5)-R174-IC5(25)
DTMF detection
TEL LINE-T2-C115-R154-IC5(61-67)-R167-C134-IC2(10-11)-C68-CN7(9)-{CN501(9)-C701-IC801(3-4)-
CNG detection
C809-R810-IC803(6-7)-J607-C603-R617-IC517(2-1)-C596-R605-IC505(45)}
TEL LINE-T2-C115-R154-IC5(61-67)-R167-C134-IC2(10-11)-C68-CN7(9)-{CN501(9)-C701-IC801(1-2)-
Caller ID
J606-C807-R808-IC803(6-7)-J607-C603-R617-IC517(2-1)-C596-R605-IC505(45)}
CHECK SHEET
Signal
I N
L38-R134-C93
L36
C84-L37
Speaker
L36
(Model KX-FP300E)
ROUTE
4
O U T
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