sc 142

**babu** · 01-09-2020

Hi guys I have a ricoh mp6002 giving me a code after start up sc142, I have replaced all the boards

1. Image scanning Board
2. PCB: SIOB
3. PCB: BCU
4. PCB:CNB :Assy
5. Power supply unit: main
6. PCB:PFB:Three way
7. Exposure lamp
8. Lamp stablizer
9. Scanner motor

Then again sc142, Now what should I do?

**Phil B.** · 01-09-2020

Originally Posted by babu

Hi guys I have a ricoh mp6002 giving me a code after start up sc142, I have replaced all the boards

1. Image scanning Board
2. PCB: SIOB
3. PCB: BCU
4. PCB:CNB :Assy
5. Power supply unit: main
6. PCB:PFB:Three way
7. Exposure lamp
8. Lamp stablizer
9. Scanner motor

Then again sc142, Now what should I do?

sounds like you really don't know what part of the machine is kicking the SC code. Did you look it up in the service manual?
You are taking the "shotgun" approach to troubleshooting. Very expensive way of going about it .

**Zaxxon** · 01-09-2020

My first would be cleaning the optics’s including white plate.

**babu** · 01-09-2020

The optics including white plate are cleaned but not solved.Then after followed the service manual and I checked each board but still not resolving......

**slimslob** · 01-09-2020

Then the next step is to replace the lamp regulator board.

**anothertech** · 01-09-2020

The book lists in this order,

 Dirty exposure lamp or optics section
 SBU board defective
 SIOB defective
 IPU board defective
 BCU board defective
 Harnesses are disconnected
 Exposure lamp defective
 Lamp stabilizer defective
 Scanner motor defective

Did you replace the IPU?
Does the lamp come on?
Check the scan harness to see if it's shorting
HDD could be bad
Are there any other sc codes stored?

**Brianneoe** · 01-12-2020

Just left of the CIS is a mylar strip that collects crap. Peel back the strip and clean the top and bottom. Don't remove it but clean both sides.

Good luck