Interpretation Of Circumferential Timing Data Graph - HP 7925D Service Manual

Alignment and Adjustment
PERFORM THE CIRCUMFER-
ENTIAL ALIGNMENT CHECK.
(Refer to paragraph 3-14.)
7925
NO
BACK UP ALL DATA ASSOCI-
ATED WITH THIS DISC DRIVE
ON A SYSTEM NOT DEPEN-
DENT ON THIS DISC DRIVE.
ADJUST THE IND DEL POTEN-
TIOMETER ON PCA-A5. (Refer
to paragraph 3-16.)
YES
PERFORM THE CIRCUMFER-
ENTIAL ALIGNMENT PROCE-
DURE AND RECORD THE
DATA ON THE CIRCUMFER-
ENTIAL TIMING DATA GRAPH.
(Refer to paragraph 3-15.)
CONTACT THE HEWLETT-
PACKARD PRODUCT
SPECIALIST.
REPLACE THE ACTUATOR.
(Refer to paragraph 5-20.)
7311-74A
3-10
Figure 3-8. Interpretation of Circumferential Timing Data Graph