Panasonic KX FLB758RU User Manual
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131 KX-FLB75 8RU Downloaded From ManualsPrinter.com Manuals
132 KX-FLB75 8RU Downloaded From ManualsPrinter.com Manuals
CROSS REFER ENCE:TEST FUNCTIONS (P.74) 133 KX-FLB75 8RU Downloaded From ManualsPrinter.com Manuals
6.5.11.5. CHECK THE STATUS OF THE DIGITAL BOARD 134 KX-FLB75 8RU Downloaded From ManualsPrinter.com Manuals
6.5.12. INITIALIZING ERROR After the power is turned on, the ASIC initialize s and checks each IC. The ROM, SDRAM, and modem are checked. If initializa tion fails for the ICs, the system will not boot up. In this case, please find the cause as follows. CROSS REFER ENCE:NG EXAMPLE (P.219) CHECK THE STATUS OF THE DIGITAL BOARD (P.134) POWE R SUPPL Y BOARD SECTION (P.155) 135 KX-FLB75 8RU Downloaded From ManualsPrinter.com Manuals
CROSS REFER ENCE:CHECK THE STATUS OF THE DIGITAL BOARD (P.134) 136 KX-FLB75 8RU Downloaded From ManualsPrinter.com Manuals
6.5.13. ANALOG BOARD SECTION
This chapter provides the testing procedures required for the analog parts. A signal route to be tested is determined depend ing
upon purposes. For example, the handse t TX route begins at the handse t microphone and the signal is output to the telepho ne
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 followin g Check Sheet and locate the faulty point.
6.5.13.1. CHECK SHEET
Note:{ }: Inside the digital board
137
KX-FLB75 8RU
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3. No ring tone (or No bell) CROSS REFER ENCE:CHECK SHEET (P.137) NCU SECTION (P.227) 4. No tone dialing CROSS REFER ENCE: CHECK SHEET (P.137) 6.5.13.2. DEFECTIVE ITS (Integrated Telephone System) SECTION 1. No handse t and speake rphone transmission / reception Perform a signal test in the ITS or the NCU sectionand locate a defective point (where the signal disappe ars) on each route between the handse t microphone and telepho ne line (sending), or between the telepho ne line and the handse t speaker (receiving), or between the microphone and the telepho ne line (sending), or between the telepho ne line and the speaker (receiving). Check the components at that point. CHECK SHEET(P.137) is useful for this investigation. 2. No pulse dialing 138 KX-FLB75 8RU Downloaded From ManualsPrinter.com Manuals
6.5.13.3. DETECTIVE TAM INTERFACE SECTION 1. The FAX turns on, but does not arrive through TAM. CROSS REFER ENCE: TAM INTERFACE SECTION (P.230) 2. A FAX is receive d, but won´t switch from TAM to FAX. CROSS REFER ENCE: ANALO G BOARD SECTIO N (P.137) TAM INTERFACE SECTION (P.230) 139 KX-FLB75 8RU Downloaded From ManualsPrinter.com Manuals
6.5.13.4. OPERATION PANEL SECTION Refer toTEST FUNCTIONS (P.74). 1. NO KEY OPERATION 2. NO LCD INDICATION CROSS REFER ENCE: TEST FUNCTIONS (P.74) 140 KX-FLB75 8RU Downloaded From ManualsPrinter.com Manuals