HP 53132A Assembly And Service Manual page 112

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NOTE
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Chapter 2 Service
The HP 53131A/132A Calibration Procedures
Press the appropriate arrow keys to enter the security code
" 53131 ", for example, if 53131 is the security code by performing
the following steps:
a. Press key four times.
The Counter should display CODE: 00000 .
b. Press key five times.
The Counter should display CODE: 50000 .
c. Press key once, and then press
The Counter should display CODE: 53000 .
d. Press key once, and then press
The Counter should display CODE: 53100 .
e. Press key once, and then press
The Counter should display CODE: 53130 .
f. Press key once, and then press
The Counter should display CODE: 53131 .
g. Finally, press Enter key.
CAL UNSECURE is displayed.
If "53131" is NOT the correct security code, the Counter will display
BAD CODE .
Press Scale & Offset key until CAL: OFFS 1 ? is displayed.
Press Enter key.
A scrolling message on the display will ask you to remove any signals
connected to Channel 1. Follow the instruction.
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key three times.
key once.
key three times.
key once.
Assembly-Level Service Guide