8Missing characters
•Is the LED head lens contaminated?
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| Yes | Clean the lens of LED head. |
▼ | No |
| Is each LED head assembly connected to the junction board (Y71 PWB) correctly? |
• |
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| No | Check the cable connection, and connect the LED head to the junction board correctly. |
▼ | Yes | Is +3.8V supplied to the following HEADPOW connector pins of the junction board (Y71 | |
• | |||
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| PWB)? |
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| +3.8V: Pin 1, 2, 3, 4, 5, 6, 7, 8 |
| • | Yes | Is +3.3V supplied to each LED head assembly from the junction board (Y71 PWB)? |
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| YPOW connector Pin 3 : LED head assembly yellow |
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| MPOW connector Pin 3 : LED head assembly magenta |
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| CPOW connector Pin 3 : LED head assembly cyan |
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| BPOW connector Pin 3 : LED head assembly black |
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| No Replace the junction board (Y73 PWB). |
| ▼ | Yes | Check the cable connection, or replace the LED head assembly. |
| • | ||
▼ | No |
| Check the cable connection, or replace the |
• |
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|
| Yes | End |
▼ | No |
| Is +32V supplied to the POWER connector of the engine board (K73 PWB)? |
• |
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| +32V: Pin 7, 8, 9, 10 |
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| No | Check the cable connection, or replace the |
▼ | Yes | Is +32V supplied to the HVOLT connector pin 5 of the engine board (K73 PWB)? | |
• | |||
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| No | Replace the engine board. |
▼ | Yes | Check the cable connection, replace the | |
• | |||
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| assembly. Recovered? |
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| Yes | End |
▼ | No |
| Is each ID terminal connected to the contact assembly correctly? (See Figure 6.3.) |
• |
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| No | Connect the ID terminals with the contact assembly correctly. |
▼ | Yes | Replace the ID unit. | |
• | |||
Notes: 1. When replacing the engine board (K73 PWB), demount the EEPROM chip from the old engine board and remount it on the new one.
2. In case the EEPROM chip is not replaced, see Item (2) in Sec. 6.5.2.
41388601TH Rev.2 | 125 / |
