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Yes, that's the number for the main module. Zenith was one of the last companies that offered module level repair of it's TV's. That means that you can exchange the module for a rebuilt one, saving the technician the time of troubleshooting the old board. In later years, Zenith announced that technicians were expected to repair the board to the component level, meaning that they were to find out exactly what part was bad and replace the bad parts.
On most Zenith TV's of any age, I tried to fix them by component level repair as much as possible. Sometimes, I exchanged the defective module and the new module was often bad right out of the box. I was told that they simply replaced a certain list of parts and that was it. If the failure happened to be caused by one of those parts; then, you're back in business. However, if the failure was something else, that meant trouble. I always liked repairing them to the component level because it's stupid to spend $60+ on a module that could have been fixed for under $5.
I seem to remember that they really didn't want you repairing the 9-160 modules (in early '80's TV's); but, I fixed a bunch of them. I've even replaced flyback transformers on them (usually with one obtained from a junk board).
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