JVC 330 Service Manual page 145

5.3 Break Points
Break Points (or Trap Processing) handle internal interrupts generated by the
processor, such as: bus errors, illegal instruction, and divide by zero commands.
Perform the following steps to setup for break codes (trap processing):
1. Access MAIN MENU and select #4 (DIAGNOSTICS MENU).
2. Select #7—this is an invisible menu item.
3. Press ENTER to clear the displayed break (trap) data.
When a break (trap) occurs, the CPU stops normal operation and outputs a code to
the LED located at the rear of the projector. The code consists of the character "e"
followed by a "2" through "C." The error code displays in a continuous loop.
Error codes and explanations are provided in Table 5-3.
Table 5-3 Break Point (Trap Processing) Error Codes
Code
2
3
4
5
6
7
8
9
A
B
C
5-5
Meaning
Bus error.
Address error.
Illegal instruction.
Zero divide.
CHK instruction.
TRAPV instruction.
Privilege violation.
Trace.
Line 1010 emulator.
Line 1111 emulator.
Spurious interrupt.
Model 330, 340SC, and 370SC Service Manual
Chapter 5---Troubleshooting
Description
Probably electrical noise.
Noise or program bug.
Noise or program bug.
Program bug.
Unlikely—may be a bug.
Unlikely—may be a bug.
Bug.
Noise.
Noise.
Noise.
Hardware.