Netfinity 7000 - Front panel displays unreadable characters

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Service Hints & Tips

Document ID: MCGN-3SXJJX

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Netfinity 7000 - Front panel displays unreadable characters

Applicable to: World-Wide

SYMPTOM
Incorrect or unreadable information is displayed on the front panel after replacing the system planar board.

PROBLEM ISOLATION AIDS
All of the following must be true for this tip to apply:
- The system is a Netfinity 7000 Type 8651 Model RM0, RH0, TH0.
- The symptoms started to occur immediately AFTER replacing the system planar board.
- Other than the symptom described above, the system functions normally.

FIX
Replace the control panel card with FRU p/n93G6052 using the following procedure:

1- Power down the server, then remove the power cord.

2- Loosen the two thumbscrews located at the back of the top cover.

3- Remove the top cover by sliding the cover to the rear , then lift the front , then the rear.

4- Disconnect the 20 conductor ribbon cable from J7 of the control panel board.

5- Remove the two internal screws located at the top rear of the LED card bracket assembly, then remove the LED card bracket assembly (Refer to the IBM Netfinity Hardware Maintenance Manual Supplement p/n06J0791 page 102).

6- Disconnect the following cables from the control panel board: - 2 conductor from J5 (to cover switch) - 26 conductor ribbon from J2 (to Power Backplane) - 40 conductor ribbon cable from J1 (to planar).

7- Remove the 4 screws that secure the control panel board to the chassis.

8- Replace the control panel board using normal parts replacement procedures.

9- Reverse this procedure to complete the installation.

DETAIL:
The buffers used in the original control panel card may cause the front panel to display unreadable / incorrect characters.
This issue has no direct effect on the system's server functions.

SAS KEYWORDS:
PSY2, D/T8651, SERVICER ONLY, CONTROL PANEL, UNREADABLE, DISPLAY, INCORRECT, 93H6052, H163143

Search Keywords

PSY2, D/T8651, SERVICER ONLY, CONTROL PANEL, UNREADABLE, DISPLAY, INCORRECT, 93H6052, H163143

Document Category

Retain

Date Created

26-03-98

Last Updated

25-09-98

Revision Date

24-09-99

Brand

IBM PC Server

Product Family

Netfinity 7000

Machine Type

8651

Model

RM0; RH0; TH0

TypeModel

Retain Tip (if applicable)

H163143

Reverse Doclinks
and Admin Purposes

Date last altered: A98/09/15

	Search Keywords	PSY2, D/T8651, SERVICER ONLY, CONTROL PANEL, UNREADABLE, DISPLAY, INCORRECT, 93H6052, H163143
	Document Category	Retain
	Date Created	26-03-98
	Last Updated	25-09-98
	Revision Date	24-09-99
	Brand	IBM PC Server
	Product Family	Netfinity 7000
	Machine Type	8651
	Model	RM0; RH0; TH0
	TypeModel
	Retain Tip (if applicable)	H163143
	Reverse Doclinks and Admin Purposes	Date last altered: A98/09/15