KL related Cmt Ui problems

Technical Documentation

Problem with CMT UI

Put BL8 module in test jig, connect B-to-B adapter JC4. DO NOT connect the UI module or Flex yet. DO NOT switch power on.

Check the resistances of display signals to the GND (1) Resistance > 1 MOhm, GENSDIO = 47kOhm?

Check, replace CSP filter Z401

Connect the Flex and the UI module. Turn the power on.

Check GENSCLK, signal as in Fig. 80 ?

Check, replace CSP filter Z401 if voltage = 0

Check GENSDIO siglnal while LCDEN is active.

Rise/fall time: 30 to 60 ns?

Check LCDEN signal.

Rise/fall time: 30 to 60 ns?

Check LCDRSTX signal

Signal 2.8 V or active?

Check, replace CSP filter Z401 if voltage = 0

D300 or PWB faulty

Figure 71.

Technical Documentation

RAE-5 8. Troubleshooting

Figure 72. GENSCLK signal.

GENSCLK signal (Figure 72 ). It should look like this when LCDEN signal is active. There is also a 2.16MHz clock signal, but it is targeted for CCONT.

Table 5. Signals and pins

Signal

Pin no.

LCDEN

12

GENSDIO

9

GENSCLK

11

LCDRSTX

14

Table above: Signals and corresponding pins.

8. Troubleshooting Technical Documentation

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