
B-65165E/02 TROUBLESHOOTING
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4. HOW TO REPLACE THE FUSES
AND PRINTED CIRCUIT BOARDS
4.3 OTHER COMPONENTS
4.3.1 Replacing the SPM Program ROM and Spindle Sensor Module
(1) SPM type 1 and type 4
ROM (Note that the notch is upward.)
Name Specification drawing No. Remarks
ROM A06B-6102-H520 9D20 series
Spindle sensor module A20B-2902-0620 For type 4 only
D4
AM1
Spindle sensor module: For A16B-2203-0503-0505 only
Control printed circuit board (A16B-2203-0500-0505)
(2) SPM types 1 to 4
The drawing number of the spindle sensor module differs
depending on the SPM type as follows:
SPM type 2: A20B-2901-0851
Mounting location = MD4, MD5, MD6
SPM type 4: A20B-2902-0620 (old specification A20B-2902-
0610 also allowed)
Mounting location = MD4, MD6
NOTE
For SPM type 4, the revision of the control printed
circuit board must be the following:
A16B-2202-0433, 0434: 16E or later
A16B-2202-0435: 13C or later