5.4.2 Troubleshooting - Procedure Number Two
This procedure in conjunction with Table 5-1, Troubleshooting Guide,
is used to isolate the failure to a specific printed circuit board.
Table 5-1, provides the most probable failing PCB for the described
problem. This procedure will help isolate the failing PCB if the
suggested faulty PCB is not the problem.
Proceed with the following steps to isolate the faulty PCB:
1. Disassemble the Console using the instructions outlined in ATARI
Personal Computers 5-21,paragraph 5.5 for the 400 Consoler and
paragraph 5.6 for the 800 Console.
2. Clean the RAM Memory PCB and CPU PCB contact fingers per the
instructions outlined in paragraph 5.2.1, PCB Contact Cleaning and
Lubrication.
3. Assemble the individual boards to operate the system out of the
casting, see Figures 5-10 and 5-11. Refer to paragraphs 5.7 and
5.8 for assembly instructions. Plug low voltage power adapter
into the System Power jack.
4. Perform System Check-Out, refer to paragraph 5.3. Continue from
this point if the system fails System Check- Out.
Figure 5-11. 800 Console, Assembled Without Casting
ATARI Personal Computers 5-21
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