Technics SX-PR603/M, Service Manual, Page: 15 / 125

2. After the service diagnostic screen is displayed on the LCD,
release the three keys.
3. Use the PAGE button below the display to select the respective
test.
Figure-19
8.1. ROM device test
Figure-20
- Press the EXECUTE button to begin the test.
- The test result (OK or NG) is displayed within a few seconds. If the
test result is NG, not only the respective IC, but a break or short
circuit in the ADDRESS/DATA BUS as well as in any of the strobe
signal lines may be the cause ofthe failure.
8.2. RAM device test
Figure-21
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