Hp 9000 error 1190

[farazshamsi]

I have a HP 9000s in Karachi. The machine was shut for more than a year. I have changed all the tubes and last month the machine started printing. At that time the only issue was blocked printheads. It was printing 4 colors and 2 were blocked. But now I am facing two problems. First when turn on the machine, it starts normally without any error. When give the IQ Print command. the head start printing the black but on the way it stops and I get error 1190. The i shut it down, it shuts normally but whenever i start again it does the same thing again and after three four tries the machine gives me EE04000 error at boot. Also one thing more that now it is not doing the normal and strong cleaning when i gives the command, it just processes the command but nothing happens. I have checked the carriage and printheads cable, they seem to be fine. I am totally stuck and doesn't know what to do. any idea what should i do. Thanks.

 

[Quix]

(taken from 900o's Service Manual)

System Error: System Error 119x: Head Relay Variable Supply Error
Problem
Description:
Output voltages of the Head Relay Board are abnormal.
Corrective Action: Try the following:
Check whether 36V is supplied to the Main PCA. If not, then:
– Make sure that the Rear Cover is closed.
– Replace Power Supply Unit ⇒ Page 8-43.
Preset the Head Relay Board Voltage from the Diagnostic Menu. Use a
circuit tester to check the voltages of the channels that have an error.
If the voltage is supplied, it means that the voltage check circuit is defective.
Replace the Main PCA ⇒ Page 8-35.
If the voltage is not supplied, replace the Head Relay Board ⇒ Page 8-40.
There is a possibility of a short circuit off the Head Relay Board output line.
Perform a short circuit test on the Main PCA.
Make sure the Carriage Trailing Cable is connected correctly and is not
damaged.

 

[J Hill Designs]

I'd put a bet on the fact that the cables are degrading that run along the belt to the head carriage (check black first - that would be 1190) - it errors out when it hits the bad spot at a bend