IBM 3279 2A Maintenance Information page 33

3279 MIM
Chapter 2. Maintenance Aids 2-12
3274 Repair Action
Error Code Explanation
Code (3279 logic card)
202
02. Control unit keystroke/status
buffer overflow
203 02, then features then B2. Feature Bus error
204 02, or C2. Storage error (Device Check)
205
*
02, then C2, then features. Unsupported feature attached
206 02, then B2, then features. Incorrect feature response
on initialization
207
*
02, then C2.
Lost Operation Complete this display
208 02, then C2. Invalid (unexpected) Operation
Complete
209 02, then C2. Command queue failure
210
*
Keyboard 10 jumpers, Invalid keyboard attached
then cable, then 02.
(not configured)
211
*
02, then features. Invalid status received
212
*
Keyboard logic,
Invalid scan code received
then cable; then 02.
222 G4, (selector pen), Invalid selector pen status
then 02, then C2. or command queue failure
223 E2, then 02. ECS buffer parity error
224 G2 (MRC), then 02.
Invalid MRC status or
command queue failure
225 E2, then 02. ECS status/initialization failure
226 E2, then 02.
ECS command queue failure
227 E2, then 02. ECS write alternate command
queue failure
228 82, then 02, then C2. Storage parity error
229 82, or 02, or C2.
Storage parity error
234
E2. Switches not set to include APL
295 02, then C2.
Invalid type A adapter status
299 02, then C2.
Non-command queue cycle
sharing machine check
2%% }
Not customized for attached features
2EE
*
Do the control unit and the customization support the 3279 features?
Check ECS card switches, PS jumper, and keyboard jumpers (see Figure 6-14).
Note:
For other error codes, see control unit or installed RPQ documentation.
Figure 2-8. Error Codes From IBM 3274 Control Unit