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Figure 3-R11 location (PCB's are missing the silk screen for R11)
Install the Diodes
Now install the diodes. Be careful to observe the polarity markings on the diodes. You’ll
notice that one end of the diodes has a band. That band indicates the cathode of the diode.
Match the banded end of the diode with the banded end of the silk screen. The following
information should help you identify the diodes.
Identifying the glass body diodes
The glass body diodes have the following identifying marks. If your vision is like mine,
you may need good light and a magnifying glass.
1N4148, D8-D11, has the number 48 visible
BZX55B33B, D1 and D14, has the number 33 visible
BZX79-B10, D2, has the number 10 visible
Also, typically when these diodes are packed, you can preliminarily identify the types
because:
The 4 1N4148 diodes will typically be taped together
The 2 BZX55B33B diodes will typically be taped together
The 1 BZX79-B10 diode will be by itself