4
(Model KX-FP300E)
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
ROUTE
I N
O U T
CHECK SHEET
MONITOR Rx
DTMF
monitor
Speaker
Handset
DTMF for TEL LINE
FAX Tx
Dummy Ring
Back tone
RINGING
Alarm / Beep /
Key tone
FAX Rx
VOX
TEL LINE-T2-C115-R154-IC5(61-67)-C116-R151-IC5(68-70)-C154-D37-R182-IC15(2-1)
-R189-CN9(3)-{CN503(3)-R716-IC501(45)}
TEL LINE-T1-R59-C44-IC10(6-7)-J33-C56-C59-R85-R89-C64-IC2(1-2)-C68-
CN7(9)-{CN501(9)-C701-IC801(3-4)-C809-R810-IC803(6-7)-J607-C603-R617-IC517(2-1)-C596-R605-
IC505(45)}
{IC501(38)-R567-R573-C564-CN501(1)}-CN7(11)-R161-C119-IC5(77-41)-C100-R139-IC5(40-38)-C91-
R132-IC3(4-5,8)-SPEAKER
{IC501(39)-R565-R572-C631-CN502(1)}-CN8(1)-R162-C120-IC5(78-41)-C100-R139-IC5(40-38)-C91-
R132-IC3(4-5,8)-SPEAKER
{IC501(39)-R565-R572-C631-CN502(1)}-CN8(1)-R162-C120-IC5(78-63)-C53-R73-IC10(2-1)-C37-R58-R57-
T1-TEL LINE
{IC505(44)-C593-R610-IC517(6-7)-C604-CN501(10)}-CN7(10)-C126-R159-IC5(73-63)-C53-R73-
IC10(2-1)-C37-R58-R57-T1-TEL LINE
{IC505(44)-C593-R610-IC517(6-7)-C604-CN501(10)}-CN7(10)-C126-R155-IC5(76-45,46)
C84-L37
Speaker
L36
{IC505(44)-C593-R610-IC517(6-7)-C604-CN501(10)}-CN7(10)-C126-R155-IC5(76-41)-C100-R139-
IC5(40-38) -C91-R132-IC3(4-5,8)-Speaker
TEL LINE-T1-R59-C44-IC10(6-7)-J33-C56-C57-R80-R150-C113-IC5(59-41)-C100-
R139-IC5(40-38)-C91-R132-IC3(4-5,8)-Speaker
Signal
TEL LINE -T1-R59-C44-IC10(6-7)-J33-C56-C57-R80-R150-C113-IC5(59-45,56)
---C84-L37---SPEAKER
L36
MIC---L35-R135-C94---IC5(52,54-63)-C53-R73-IC10(2-1)-C37-R58-R57-T1-TEL LINE
L38-R134-C93
Handset Rx
Handset Tx
DTMF detection
TEL LINE-T2-C115-R154-IC5(61-35)-R180-C150-IC4(1-5)-R174-IC5(25)
CNG detection
TEL LINE-T2-C115-R154-IC5(61-67)-R167-C134-IC2(10-11)-C68-CN7(9)-{CN501(9)-C701-IC801(3-4)-
C809-R810-IC803(6-7)-J607-C603-R617-IC517(2-1)-C596-R605-IC505(45)}
Caller ID
TEL LINE-T2-C115-R154-IC5(61-67)-R167-C134-IC2(10-11)-C68-CN7(9)-{CN501(9)-C701-IC801(1-2)-
J606-C807-R808-IC803(6-7)-J607-C603-R617-IC517(2-1)-C596-R605-IC505(45)}
(TONE 2)
(TONE 2)
(TONE 1)