Today at Atelier Kaz - ex-Honda R&D, F1, Indy/CART engineer

Recently, I started servicing the two A/C CCU board in parallel.


One owner sent the board through the post and the other owner hand carried it to my place together with 3 x Bose AMP and OEM Alpine Head Unit.


For the first time, I found out that I was working on the two CCU board from the same Lot no..
The owner who sent the board through the post didn't include the black plastic case that has the Lot no. written on it so I had ...

Tags: ccu, climate control unit

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A/C CCU Board Service

Although the owner was not feeling any issues on his A/C system,
he decided to carry out the preventative measures on the CCU.
Very good decision by acting now instead of waiting for something to fail
as it will save the time and cost for the owner.




The light green circuit board material with brown capacitor ...

Tags: ccu, climate control unit

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A/C CCU Board Service

The CCU board is already on its way to the owner and will be delivered
by 1pm today so doing another catch up updating the blog.......




Using my NSX to go through several different test scenarios including
the Function & Operation check and Self diagnosis test.



...

Tags: ccu, climate control unit

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A/C CCU Board Service

As I’m behind the schedule for the Eng Refresh, decided to work over the
weekend to finish the service on this board as much as possible.

In the past, I repaired the CCU board that required 25 extra services but
almost all of the damages were caused by someone without proper
soldering or electronics training so I don’t refer it as natural failure.

The worst CCU board that I serviced in the past with natural failure required ...

Tags: a/c, a/c ccu, ccu, climate control unit

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A/C CCU Board Service

Lots and lots of cleaning carried out.

DM11 and C25 were removed for inspection.
Fortunately, they were still fine.




DM11 checked, cleaned and back in place.
Required soldering bridge and jumper ...

Tags: a/c, ccu, climate control unit

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A/C CCU Board Service