Question about Dell E152FP 15" Flat Panel LCD Monitor

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The keys /switches of key PCB need to be replaced

How do you do this?

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You have to be technically proficiet with ability to remove backcover,key menu pcb and remove keys/switches using a soldering Iron.If you feel the above description is a bit too much you should approach a electronic technician rather then attempt it yourself.
Samir

Posted on Sep 08, 2008

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You have to be technically proficiet with ability to remove backcover,key menu pcb and remove keys/switches using a soldering Iron.If you feel the above description is a bit too much you should approach a electronic technician rather then attempt it yourself.
Samir

Posted on Aug 02, 2008

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1 Answer

How to solve canon np7161 error code 104


To clear E000 through E004, operate as follows:
1) Select '412' (clear E000-E004) in service mode.
• The copier's control panel indicates the respective error code.
2) Press the Start key.
3) The copier will automatically turn off, clearing the error.



E004
• The triac has a short circuit.
• The DC controller PCB is faulty.


Fixing heater (H1)
=Execute service mode '412' (error clear) to clear E004.
Turn off/Turn on the power switch. Does the fixing heater turn on?

Triac
=Check/Replace the power supply PCB

DC controller PCB=Check the wiring from the power supply PCB to the DC controller PCB

The fixing heater fails to turn on.

Thermal switch (TSW1
Turn off the power switch, and remove the fixing assembly. Set the meter range to
"Wx1." Does the meter index swing when the probes are connected across both terminals of the thermal switch

Fixing heater (H1)

Turn off the power switch, and remove the fixing assembly. Is there continuity when probes are connected across both terminals of the fixing heater

DC controller PCB

Set the meter range to 30 VDC, and connect the probes to J106-21 (+) and J105-4 (-) on
the DC controller PCB. Is the resistance about 5 V


Using Service Mode
1) Press the User Mode key.
2) Press '2' and '8' of the keypad at the same time. (Hold them down for 0.5 sec or more.)
3) Press the User Mode key once again.

Feb 27, 2018 | Canon Office Equipment & Supplies

Tip

How to repair keypad problem in China Mobile


First we need to know china phone keypad connected with PCB how way
(A) Direct on PCB
(B) Flex System (flex cable direct soldering pcb to keypad panel)
© Flex and socket system include (flex one side soldering with key panel other side connect to pcb with socket)
(D) only Socket System (here have 2 socket, 1 with key panel others with pcb)
Keypad problem have various type
1. All key not work.
2. some key work and some other not work.
3. sometimes work and sometimes not work.
1. All key not work
china phone all key not work for this type of problem
(A) though its touch screen phone, first try to disconnect touch panel line from phone pcb or display flex (4 line)
(B) though not solve and keypad direct on pcb first you try to good clean full pcb with cleaner.
© though not solve now you try to format/flash your phone because some time key problem come from software problem.
(D) though still not solve now you check must be CPU. 95% china phone keypad directly going in cpu. and other 5% first going to resistor or capacitor near the cpu or keypad than going to cpu. so now first check them than you can try to re-hot, re-soldering or changing cpu.
(E) though its flex or socket system, first check GND connection continuslay pcb to key panel. next check full flex or socket all line going continuously pcb to key panel or not. also sometimes flex or socket shorted with other line or gnd so check also them.
(F) Also you can check all key anyone is short 2 line.
(G) sometimes keypad line broken from cpu pin on pcb to key panel, so check them.
2. Some key work and some other not work
Some key work and some other is not work for this type of problem
(A) maximum time this problem we face for flex or socket system keypad. so check flex cable and socket all line any line is broken or not and though need change them. and check all key connection on key panel.
(B) though its direact on pcb, some of key line broken internaly. and maximum china phone have alternative test point near every key or with other key on keypad. so check them with multimeter and though need connect to not work key with near testpoint or other working key.
© common problem is keypad metal ball (which is short 2 line on key when we press) sometimes its damage for phone water damage or over key voltage, so clean them or change.
(D) also try to check line continuously from cpu to not working key.

3. sometimes work and sometimes not work
this problem come from this defect
(A) flex or socket system keypad any line is bad soldering or do lose contact. check them and
re-soldering or keep there line join with extra ware.
(B) for cpu bad soldering or cpu pin is broken. so re-hot or re-ball cpu.

on Jan 06, 2010 | Cell Phones

1 Answer

Key not sounding


HI this is probably cause by the rubber contact failing.
Under each key is a rubber strip which acts as a switch against a PCB when the key is pressed.

Clean or Replace the strip and all should hopefully work again.

Part is either WF212202 or WF212402 depending on the location of the faulty note.

https://www.beckettsmusic.co.uk/shop/scripts/prodView.asp?idproduct=18846

https://www.beckettsmusic.co.uk/shop/scripts/prodView.asp?idproduct=23443


26246252-is00yow5nw3pu04xpeefoci4-1-0.jpg

26246252-is00yow5nw3pu04xpeefoci4-1-2.jpg

Jul 27, 2016 | Yamaha Music

2 Answers

How do i solve an error e000-0000 canon ir 2002n please


Description
The main thermistor reading does not reach 40C 14 sec after the fixing heater goes ON (fixing low temperature error)

Remedy
1) Wiring Is the connection of the connector (CN8) on the power supply PCB and the connector (J103) on the DC controller PCB and the wiring to the fixing assembly normal? NO : Correct the connection and wiring. 2) Fixing assembly Try replacing the fixing assembly. Is the fault corrected? YES : End. 3) Power supply PCB, DC controller PCB Try repacking the power supply PCB. Is the fault corrected? YES : End. NO : Replace the DC controller PCB. 4) Error With the power switch ON, clear E000 through E004; then, turn off and then on the power switch.

Aug 05, 2015 | Canon Office Equipment & Supplies

2 Answers

How can I fix an error code E007 on a canon IR2022 copier?


E007
0000-
An error in the rotation of the fixing film is detected.
The reading of the main thermistor is 100C or higher and, in addition, the
fixing film sensor does not detect the rotation of the film for 6 sec or more
while the fixing motor is driven.

Main cause-
The fixing film sensor (PS45) is faulty. The DC controller PCB is faulty.

Caution-
To clear the error, execute the following in service mode:
COPIER>FUNCTION>CLEAR>ERR.

Action
-------------------------------------------------------------------------------
1. Wiring
Are the wring and the connectors connected securely?
DC controller PCB (J311) <-> relay connector <-> fixing film sensor
NO:Connect the wiring and the connectors.
-------------------------------------------------------------------------------
2. Fixing film sensor
Check the fixing film rotation signal.When the fixing motor is rotating, is
the film rotation detection signal sent by the fixing film sensor to the
concoctor J311 of the DC controller PCB?
Film rotation detection signal:5V pulse signal between J311-A9
(FILM_ROT_D) and J311-A8 (GND); at intervals of 100 msec ON and 440 msec OFF
NO:If the fixing film is normal, replace the sensor.
-------------------------------------------------------------------------------
3. Fixing film unit, DC controller PCB
Is there a fault in the fixing film edge rotation detection mechanism?
YES:Replace the fixing film unit.
NO:Replace the DC controller PCB.

===============================================
Execute the following in service mode, and
turn off and then on the power switch to clear the memory: #7
PRINTER>#4 PRINTER RESET>YES=(*)

Try this - Enter the service mode by pressing "additional function" key, "2" and "8" keys in that order. SSSW will display. Press "OK" key.
Change Bit switch 1, bit 0 (might display as the first one on the left using number keys) status, (change 1 to 0 or 0 to 1).
Press "OK" than Press "Stop" or "Additional Function key" to end service mode or restart the machine.

Jul 16, 2014 | Canon iR 2022 Printer

1 Answer

Yamaha psr 295


Hi, This is probably due to worn rubber contacts. The sound is switched by pressing a key which in turns press a carbon contact on the PCB under the key. In time these wear out and need to be replaced.

Firstly open up the keyboard and locate the rubber contacts, check to see if each one is seated squarely, if they are not seat straight then this can create the problem you mention.

If all are OK then you will need to replace the strip which is causing a problem.

Spares are available from many sources including :

http://www.beckettsmusic.co.uk/shop/scripts/prodView.asp?idproduct=16049

Jul 20, 2013 | Yamaha PSR-295MS Portable 61-Key...

1 Answer

Black box with options exit positioning osd setting keeps flashing on to screen


The keys /switches of key PCB need to be replaced.
Samir

Do rate the solution and provide feedback.

Jul 16, 2008 | Dell E152FP 15" Flat Panel LCD Monitor

2 Answers

Problem with controler


The problem is defective keys/switches of front key PCB.You need to replace this key PCB or Individual keys.
Normally Benq Offers a 3 yr warranty Try contacting BenQ.
Please rate the solution and provide feedback.
Samir

May 15, 2008 | BenQ FP731 17" LCD Monitor

1 Answer

IR 2000


Fuser error probally needs fuser replaced and the reset as below

try this

1. Hit Additional Functions Key
2. Hit # key
3. Arrow to number 7, Printer and hit Set
4. Arrow to number 4, Printer Re-Set and hit Set.
5. Yes, re-set printer (hit minus key - back arrow).
6. Unplug the machine and plug it back in.

or this is explaination of the error and required fix from service manual.


E0000000
The reading of the main thermistor does not reach 30°C 1 sec after the main
power switch is turned on. Or, it does not reach 70°C 2 sec thereafter.
Main cause The fixing film unit is faulty. The main thermistor has an open circuit. The
fixing heater has an open circuit. The main power supply PCB is faulty. The
DC controller PCB is faulty.
Caution To reset the error, execute the following in service mode:
COPIER>FUNCTION>CLEAR>ERR.
Action
1. Connector
Is the connector of the fixing assembly connected?
a. main power supply PCB (J8) <-> relay connector <-> heater
b. DC controller PCB (J320) <-> relay connector <-> thermistor
NO: Connect the connector.
2. Fixing film unit (thermistor)
Check the interval between pin 1 and pin 2 and between pin 3 and pin 4 of
the connectosr (4-pin) of the thermistor for electrical continuity. Is it ¥W
(open)?
YES: The heater has an open circuit, or the thermal switch is open. Replace the fixing film unit.
4. Main power supply PCB, DC controller PCB
Press the Start key. Is the drive voltage of the heater supplied by the connector J8 of the main power supply PCB?
Main heater: between J8-1 (FSR1) and J8-5 (FSR COM)
Sub heater: between J8-3 (FSR2) and J8-5 (FSR COM)
YES: The heater drive power supply is faulty. Replace the main power
supply PCB.
NO: The thermistor control mechanism is faulty. Replace the DC controller
PCB.

Nov 18, 2007 | Office Equipment & Supplies

4 Answers

Error code


hi,
this is a problem in scaning lamp,check the cable which is connected from scaning lamp to pcb is damaged or discontinued ,so replace it but the fault will be rectified replace the pcb,then contact service dealer

Oct 16, 2007 | Toshiba e-Studio 161 Copier Copier

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