Service manual

SC Tables
SM 6-37 D127/D128
Trouble –
shooting
No.
Definition
Symptom Possible Cause/Countermeasure
878 TPM system authentication error
-00 B
The system firmware is not
authenticated by TPM (security
chip).
 Incorrect updating for the
system firmware
 Defective flash ROM on the
controller board
1. Replace the controller board.
-01 B
USB Flash error
Defective file system of USB
Flash memory.
 USB Flash file system is broken
1. Replace the controller board
-02 B
TPM error
Defective TPM or TPM drive
 Defective TPM
1. Replace the controller board
-03 B
TCSD error
Defective TPM Software Stack
 Cannot start TPM Software
Stack up
 NOT found necessary files for
TPM Software Stack
1. Replace the controller board
880 B
File Format Converter (MLB) error
A request to get access to the
MLB was not answered within
the specified time.
 MLB defective