What is a main PCB

Hi There,

If you have blown a Varistor, the manufacturer would not allow you to keep using that treadmill. Varistors are a safety device and should always be viable or electrical damage could be possible, leading to human injury. A blown varistor almost always says, "I saw voltage too high and I shorted to protect the circuits further downstream, that is my main job".... you can contact [email protected] for more help if needed. Good Luck.

Canon iR3300 Error Codes Code: E732-0001

Code

E732-0001

Description

A fault is detected by the main controller PCB in the communication between reader controller PCB and the main controller PCB

Causes

The connector has poor connection. The reader controller PCB is faulty.

Remedy

1. Connector, Reader controller PCB Is the connection between the connector J1014 on the main controller PCB and the connector J409 on the reader controller PCB normal? NO: Correct the connection. YES: Replace the reader controller PCB.

Below is the site this came from which lists all the error codes in case another occurs after you resolve this one


Canon iR3300 Error Codes List page 1 from 12

1. No transfer charging. A. The connector terminals of the high-voltage PCB make poor contact. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. B. Defective engine PCB. Replace the engine PCB and check for correct operation. C. Defective high-voltage PCB. Replace the high voltage PCB and check for correct operation. 2. No LSU laser is output. A. Defective laser scanner unit. Replace the laser scanner unit (see page 1-6-29). B. Defective main PCB. Replace the main PCB and check for correct operation. 3. No developing bias is output. A. The connector terminals of the high-voltage PCB make poor contact. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. B. Defective engine PCB. Replace the engine PCB and check for correct operation. C. Defective high-voltage PCB. Replace the high voltage PCB and check for correct operation.

Hi
A quick look on the internet told me that this is probably a Canon iR series printer/copier, and have proceeded on this basis. This particular code crops up on several models (all that I tried !) and the explanation is given below: Description Serial number mismatch between main controller PCB and maintenance cartridge ROM PCB. Remedy Execute PCB replacement mode or replace the main controller PCB. Should you wish to confirm this for your particular model, click the link below:-
Error Codes Canon iPF8300 Code E196 404C
and in the centre of the page is a drop down menu "Model" where you choose yours.
Hope this is helpful, if so would you please register that with Fixya
Cheers

Circuit Diagram - Zoom G1 Service Manual [Page 15]

https://www.manualslib.com > ... > Service manual

Zoom G1 Manual Online: Circuit Diagram. A MAIN PCB(PCB-0169) CPU Circuit - 15 - 5 6 7... ... Circuit Diagram - Zoom G1 Service Manual. Guitar effects pedals.

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  Circuit Diagram - Zoom g9.2tt Service Manual [Page 28]

  https://www.manualslib.com > ... > Service manual
  Zoom g9.2tt Manual Online: Circuit Diagram. MAIN PCB(PCB-0151) CPU Circuit - 28 - 5 6 ... Music Pedal Zoom Guitar Effects Console G9.2tt2q Operation Manual.

E733
0001 A fault is detected by the main controller PCB in the communication between
the DC controller PCB and the main controller PCB.
Main cause The connector has poor connection. The DC controller PCB is faulty.
Action
1. Connector, DC controller PCB
Is the connection between the connector J1015 on the main controller PCB
and the conductor J316 on the DC controlled PCB normal?
NO: Correct the connection.
YES: Replace the DC controller PCB.

(2) All black At the scanner
Check the following components:
- CIS harness
- CIS unit
- Main PCB
At the printer side

Clean the high-voltage contacts for the grid and charger on the
drum unit, main cover, and high-voltage power supply PCB.
(Contacts and in the illustration given on page 6-28)

Clean the charger (corona wires) itself.

Check the connection of the laser flat cable on the main PCB.

Replace the drum unit.

Replace the high-voltage power supply PCB.

Replace the main PCB.

Sir i am a Canon trained tech. I just checked our website and my service information. I found the following. I suspect someone has been working on these machines or swapped some parts around.

Page 1 of 2
MODELS AFFECTED / SERIAL NUMBERS AFFECTED:
Digital Copiers, Including All imageRUNNER Products
SUBJECT:
Information About The New Soft Counter Circuits
GENERAL TECHNICAL INFORMATION
GENERAL:
This Technical Publication presents information about the new Soft Counter circuit that replaces the mechanical counter
used in the past. There are three (3) PCB’s associated with the new Soft Counter circuit; the Counter Memory PCB,
Main Controller PCB and the Serial Number PCB. A description of their function is provided below. Use this
document as a reference for current and future models that use the Soft Counter circuit.
Counter Memory PCB
On the latest Canon digital copiers, such as the imageRUNNER 5000, imageRUNNER 8500 and imageRUNNER 2200
series, there are no mechanical counters. Instead there is a Counter Memory PCB. This PCB is usually mounted on the
Main Controller PCB with one screw. The Counter Memory PCB is imprinted with the serial number of the machine
the first time power is turned ON and cannot be moved to another machine. Attempting to do so will generate an E246
error code. In the event of a Counter Memory PCB failure, a new one from stock (see Note 4) can be installed into the
machine. At that point the Main Controller PCB will transfer its present total count as indicated in “Counter Check” on
the control panel (recorded the last time power was turned OFF) to the new Counter Memory PCB and the total counter
will increment from that count on. Never attempt to operate a machine without the Counter Memory PCB
installed! This may generate an E245 code, which can only be cleared by “zeroing out” the Main Controller PCB by
one of our A.P.R.F.’s (Authorized Parts Repair Facilities).
Main Controller PCB
The Main Controller PCB, aside from performing other tasks, retains the total count by means of SRAM with a battery
back up after power has been turned OFF. If, however, the Main Controller PCB has been replaced with either a new
one or a used one, it will read in and record the total count from the Counter Memory PCB retained the last time power
was turned OFF. The total count will then increment from that count on.
Note 1:
Even though the total count will be the correct value for that machine after replacing the Main Controller, the soft
counters in Service Mode will not. If a new Main Controller was used for the replacement, then all soft counters in
Service Mode (service counters in “Counter Mode”) will be zero. If, on the other hand, a used Main Controller was
used for this replacement, the soft counters previously recorded on that PCB would be shown. At that point it is
advisable to clear these values in Service Mode using Function>Clear>CNT-MCON.
All Main Controllers sent to our A.P.R.F.’s for repair will be “zeroed out” before being sent back to the dealer.
Page 2 of 2
GTI-T151
04-30-02 GT I
Note 2:
The Counter Memory PCB and the Main Controller PCB should never be replaced simultaneously! This will
generate an E354 code and assistance from the Canon Reseller Technical Support Center Hotline will be required. If
the Main Controller is sent to one of our A.P.R.F.’s for repair, you must remove the Counter Memory PCB
before sending it out! Failure to do so will only increase down time for your customer.
Note 3:
If the Main Controller PCB is replaced, ensure that connector J1023 is connected. If it is not, an E350 will be
generated.
Serial Number PCB
The Serial Number PCB’s main function is to identify the machine’s serial number. This PCB cannot be moved to
another machine. Attempting to do so will generate an E355 and assistance from the Canon Reseller TechnicalError codes not listed in the Service Manual:
There are various error codes that are not listed in the Service Manual. Canon U.S.A., Inc. reserves the right to treat
these error codes as Proprietary Information. If you encounter any of the following error codes, contact your Canon

E245 E246 E247 E350 E354 E355
Note 4:
Please be advised that Canon U.S.A., Inc. treats the Counter Memory PCB and Serial Number PCB as “restricted” parts.
When a dealer orders these components they will be asked to provide the reason for their replacement, and the original
PCB will have to be returned to Canon U.S.A., Inc. for evaluation.

Machine error 36
**Head/carriage unit travel error***

Try to find any obstacles on the travel path of the head/carriage unit. If you cannot find, next steps are:

- Replace the carriage PCB.
- Replace the head/carriage unit.
- Replace the CR encoder strip.
- Replace the carriage motor.
- Replace the main PCB.
- Replace the power supply PCB.
- Replace the maintenance unit.

Found These Fault Codes On Internet, Hope This Helps, Daz

ALARM CODES

E00(E00)- Problems with water fill during washing
-Tap closed; solenoid valve, water distributor, wiring ,main PCB, pressure switches

E01(E00)- Problems with water fill during drying
-Tap closed; solenoid valve, wiring , main PCB, pressure switches

E10(E10)- Problems with water drain during washing
-Drain hose kinked, filter blocked, drain pump, water distributor, wiring , main PCB, pressure switches

E11(E10)- Problems with water drain during drying
-Drain hose kinked, filter blocked, drain pump, pressure switches

E20(E20)- Door open
-Cycle in Door delay, wiring , main PCB

E21(E20)- Fault in door delay power triac
-Wiring , main PCB

E30- Fault in electronic pressure switch
-Electronic pressure switch, wiring , main PCB

E31- Fault in electronic pressure switch circuit
-Main PCB (fault in electronic pressure switch circuit)

E32(E10)-Calibration error in electronic pressure switch
-Electronic pressure switch, drain pump, wiring , main PCB, filter blocked

E33- Incongruency between electronic pressure switches and safety switch 1
-Electronic pressure switch, safety pressure switch,wiring, main PCB

E34- Incongruency between electronic pressureswitches and safety switch 2
-Electronic pressure switch, safety pressure switch,wiring, main PCB

E35- Intervention of anti-overflow pressure switch
-Solenoid valve, water distributor, wiring, main PCB,anti-overflow pressure switch

E36- Water leakage (maximum number of resets exceeded)
-Water leakage, drain hose too low, pressure switch,wiring, main PCB

E40- Motor power triac short-circuited
-Main PCB (triac short-circuited)

E41- No signal from tachimetric generator
-Tachimetric generator on motor, wiring, main PCB

E42- Fault in tachimetric generator circuit
-Main PCB (tachimetric generator sensing circuit)

E43- Intervention of motor overload protection
-Motor, wiring, main PCB

E50- Insufficient heating during wash phase
-NTC sensor setting incorrect, heating element, wiring,main PCB

E51- Overheating during wash phase
-Heating element (to earth), main PCB (relays)

E52- Insufficient heating during drying phase
-NTC sensor setting incorrect, safety thermostat,thermostats, drying heater, wiring, main PCB (relays)

E53- Overheating during drying phase
-Drying heater (to earth), main PCB (relays)

E55- Fault in power relay for heating element (K3)
-Safety pressure switch 2, wiring, main PCB- 6 -

E60- Fault in washing NTC sensor
-Washing NTC sensor, wiring, main PCB

E61- Fault in drying NTC sensor(condenser)
-Drying NTC sensor (condenser), wiring, main PCB

E62- Fault in drying NTC sensor(duct)
-Drying NTC sensor (duct), wiring, main PCB

E63- Fault in 1/2 power thermostat
-Drying NTC sensor (duct), 1/2 power thermostat, wiring,main PCB

E70- Power triac to distributor motor short-circuited
-Main PCB (triac short-circuited)

E71- Fault in power relay to distributor loads
-Main PCB (relay open)

E72- No distributor position signal
-Water distributor motor, wiring, main PCB

E73- Incorrect timing on distributor contacts
-Water distributor, wiring, main PCB

E90- Fault in tank fill pump
-Hoses obstructed, tank fill pump, wiring

E91- Fault in tank drain pump
-Hoses obstructed, tank drain pump, wiring

E92- Fault in power triac to tank fill pump
-Tank fill pump, wiring, main PCB