KX-FP300E - Panasonic Fax Service Manual Simplified (repair manual). Page 4

4

(Model 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)