Panasonic KX-FC235G-S Service Manual ▷ View online
7.7.5.2.1. Journal 2
Refer to JOURNAL 2 in Printout Example(P.106).
Journal 2 displays the additional detailed information about the last 35 communications.
Journal 2 displays the additional detailed information about the last 35 communications.
Descriptions:
(1) RCV. MODE
Indicates which receive mode the unit was in when the unit received a fax message.
This information is also displayed when the unit transmitted a fax message.
(1) RCV. MODE
Indicates which receive mode the unit was in when the unit received a fax message.
This information is also displayed when the unit transmitted a fax message.
(2) SPEED
Indicates the speed of the communication. If multiple pages are transmitted or received, it indicates the last page’s communication
speed. If there is a communication error, "?" is displayed.
Indicates the speed of the communication. If multiple pages are transmitted or received, it indicates the last page’s communication
speed. If there is a communication error, "?" is displayed.
(3) RESOLUTION
Indicates the resolution of the communication. If multiple pages are transmitted or received, it indicates the last page’s resolution.
If there is a communication error, "?" is displayed.
Indicates the resolution of the communication. If multiple pages are transmitted or received, it indicates the last page’s resolution.
If there is a communication error, "?" is displayed.
(4) RCV-TRIG. (CNT.)
Indicates the trigger that causes the unit to switch to the fax receive mode. The available options are listed in JOURNAL 2 in
Printout Example(P.106). The values in parentheses indicate how many times the trigger has been used. (For example, "0003"
means three times.)
Indicates the trigger that causes the unit to switch to the fax receive mode. The available options are listed in JOURNAL 2 in
Printout Example(P.106). The values in parentheses indicate how many times the trigger has been used. (For example, "0003"
means three times.)
No.
Display
Function
1
FAX MODE
Means the unit received a fax message in the FAX mode.
2
MAN RCV
Means the unit received a fax message by manual operation.
3
FRN RCV
Means the unit received a fax message by friendly signal detection.
4
VOX
Means the unit detected silence or no voice.
5
RMT DTMF
Means the unit detected DTMF (Remote Fax activation code) entered remotely.
6
PAL DTMF
Means the unit detected DTMF (Remote Fax activation code) entered by a parallel connected
telephone.
telephone.
7
TURN-ON
Means the unit started to receive after 17 rings. (Remote Turn On: Service Code #573)
8
TIME OUT
Means the unit started to receive after Ring Time Out.
9
IDENT
Means the unit detected Ring Detection.
10
CNG OGM
Means the unit detected the CNG while it was sending the OGM in the TAM/FAX mode.
11
CNG ICM
Means the unit detected the CNG while it was recording the ICM in the TAM/FAX mode.
(5) ERROR
→
→
→
→MEMORY
Indicates the reason why the unit received a fax message in memory.
If you look at No.11 in the JOURNAL 2 in Printout Example(P.106), it shows the fax message was received in memory due to
"PAPER OUT" error.
If you look at No.11 in the JOURNAL 2 in Printout Example(P.106), it shows the fax message was received in memory due to
"PAPER OUT" error.
NO RESPONSE DISAPPEARED ON JOURNAL
The "NO RESPONSE DISAPPEARED ON JOURNAL" displays the information about the last 10 communications terminated by
"No Response". (Some of the communications terminated by "No Response" were not displayed in the JOURNAL.)
When a fax transmission cannot be performed because the other party’s unit is set to the TEL mode, "No response" will be printed.
"No Response". (Some of the communications terminated by "No Response" were not displayed in the JOURNAL.)
When a fax transmission cannot be performed because the other party’s unit is set to the TEL mode, "No response" will be printed.
105
KX-FC235G-S
(6) ENCODE
Compression Code: MH/MR
Compression Code: MH/MR
(7) MSLT
MSLT means Minimum Scan Line Time. Used only at the
factory.
MSLT means Minimum Scan Line Time. Used only at the
factory.
(8) EQM
EQM means Eye Quality Monitor. Used only at the factory.
EQM means Eye Quality Monitor. Used only at the factory.
(9) ERROR LINE(RX)
When an error occurs while receiving a fax, this shows the
number of error lines.
When an error occurs while receiving a fax, this shows the
number of error lines.
(10) MAKER CODE
This shows a 2 digit code of the other party´s fax machine
brand.
This shows a 2 digit code of the other party´s fax machine
brand.
0E: "KX" model
00: Unknown
79: "UF" model
19: "Xerox" model
00: Unknown
79: "UF" model
19: "Xerox" model
7.7.5.2.2. Journal 3
Refer to JOURNAL 3 in Printout Example (P.106).
Descriptions:
Descriptions:
7.7.5.2.3. Printout Example
106
KX-FC235G-S
107
KX-FC235G-S
7.7.6. Digital Board Section
When the unit fails to boot up the system, take the troubleshooting procedures very carefully. It may have a serious problem.
The symptom: No response when the power is turned on. (No LCD display, and keys are not accepted.)
The first step is to check the power source. If there is no problem with the power supply unit, the problem may lie in the digital
unit (main board).
As there are many potential causes in this case (ASIC, DRAM, etc.), it may be difficult to specify what you should check first.
If a mistake is made in the order of checks, a normal part may be determined faulty, wasting both time and money.
Although the tendency is to regard the problem as a serious one (IC malfunction, etc.), usually most cases are caused by solder
faults (poor contact due to a tunnel in the solder, signal short circuit due to solder waste).
The symptom: No response when the power is turned on. (No LCD display, and keys are not accepted.)
The first step is to check the power source. If there is no problem with the power supply unit, the problem may lie in the digital
unit (main board).
As there are many potential causes in this case (ASIC, DRAM, etc.), it may be difficult to specify what you should check first.
If a mistake is made in the order of checks, a normal part may be determined faulty, wasting both time and money.
Although the tendency is to regard the problem as a serious one (IC malfunction, etc.), usually most cases are caused by solder
faults (poor contact due to a tunnel in the solder, signal short circuit due to solder waste).
Note:
1. Electrical continuity may have existed at the factory check, but a faulty contact occurred as a result of vibration, etc., during
transport.
2. Solder waste remaining on the board may get caught under the IC during transport, causing a short circuit.
Before we begin mass production, several hundred trial units are produced at the plant, various tests are applied and any
malfunctions are analyzed. (In past experiences, digital IC (especially DRAM and FLASH ROM) malfunctions are extremely rare
after installation in the product.)
This may be repaired by replacing the IC, (DRAM etc.). However, the real cause may not have been an IC malfunction but a
soldering fault instead.
Soldering faults difficult to detect with the naked eye are common, particularly for ASIC and RA (Resistor Array). But if you have
an oscilloscope, you can easily determine the problem site or IC malfunction by checking the main signal lines.
Even if you don’t have such a measuring instrument, by checking each main signal line and resoldering it, in many cases the
problem will be resolved.
An explanation of the main signals (for booting up the unit) is presented below.
malfunctions are analyzed. (In past experiences, digital IC (especially DRAM and FLASH ROM) malfunctions are extremely rare
after installation in the product.)
This may be repaired by replacing the IC, (DRAM etc.). However, the real cause may not have been an IC malfunction but a
soldering fault instead.
Soldering faults difficult to detect with the naked eye are common, particularly for ASIC and RA (Resistor Array). But if you have
an oscilloscope, you can easily determine the problem site or IC malfunction by checking the main signal lines.
Even if you don’t have such a measuring instrument, by checking each main signal line and resoldering it, in many cases the
problem will be resolved.
An explanation of the main signals (for booting up the unit) is presented below.
Don’t replace ICs or stop repairing until checking the signal lines.
An IC malfunction rarely occurs. (By understanding the necessary signals for booting up the unit, the “Not Boot up”
display is not a serious problem.)
An IC malfunction rarely occurs. (By understanding the necessary signals for booting up the unit, the “Not Boot up”
display is not a serious problem.)
What are the main signals for booting up the unit?
Please refer to Digital Block Diagram (P.109).
The ASIC (IC501) controls all the other digital ICs. When the power is turned on, the ASIC retrieves the operation code stored
in the FLASH ROM (IC502), then follows the instructions for controlling each IC. All ICs have some inner registers that are
assigned to a certain address.
It is the address bus by which the ASIC designates the location inside each IC. And the data bus reads or writes the data in
order to transmit the instructions from the ASIC to the ICs.
These signal lines are all controlled by voltages of 3.3V (H) or 0V (L).
The ASIC (IC501) controls all the other digital ICs. When the power is turned on, the ASIC retrieves the operation code stored
in the FLASH ROM (IC502), then follows the instructions for controlling each IC. All ICs have some inner registers that are
assigned to a certain address.
It is the address bus by which the ASIC designates the location inside each IC. And the data bus reads or writes the data in
order to transmit the instructions from the ASIC to the ICs.
These signal lines are all controlled by voltages of 3.3V (H) or 0V (L).
108
KX-FC235G-S
Click on the first or last page to see other KX-FC235G-S service manuals if exist.