Sedecal SPL-HF 2.0, Service Manual

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Portable X-ray Units
Service Manual
SM-1076R2
68
ERROR CODE : E46
DESCRIPTION
: Busy I2C bus. I2C Bus error, the Bus remains always busy.
“Recoverable” with the “
Reset ” push-button.
POSIBLE CAUSES
It is not possible to communicate as the Bus is always busy.
ACTIONS
1. Check on the Control Portable Board ( A3175--03 ):
G
I2C Bus pull--up resistors (R66 and R67).
G
Review all the hardware connected to the I2C Bus: P89LPC922 (U56),
M41T56 (U54).
2. Check on the Control Driver Board ( A3189--04 ) the digital potentiometer AD5245
(U10) and the multiplexer MAX4586 (U12).
3.
Review the related components to all of them.
4.
If the error persists, replace the defective hardware.
ERROR CODE : E47
DESCRIPTION
: The APR Lite checksum is wrong.
“Recoverable” with the “
Reset ” push-button.
POSIBLE CAUSES
Defective Non-Volatile RAM memory in U25-EEPROM Microcontroller (Portable Control
Board
A3175--03 ) or it has not been initialized.
Defective Portable Control Board ( A3175--03 ).
ACTIONS
1. Press the “ Reset ” push-button.
2. If the error persists, turn Off/ON the unit.
3. If the error persists, initialize the EEPROM ( refer to Section 5.1.1 ).
4. If the error persists, replace the Portable Control Board ( A3175--03 ) and initialize
the new EEPROM ( refer to Section 5.1.1 ).