Repair
Repair Price: $ 854.00
Purchase
CSL Part Number: 74344
Product Overview: The YES Logical Sequencer (model 01-790-0305187) is a programmable process controller commonly found in semiconductor processing equipment, particularly HMDS vapor prime ovens and plasma systems. It features a 24x2 LCD display with membrane keypad for operator interface, controlling multiple inputs and outputs through a Z8681 microprocessor and DS1225AB non-volatile SRAM for program storage. Available in both 24VAC and standard voltage configurations, it manages sequential timing operations and process control functions in YES-branded semiconductor manufacturing tools.
Category: Sequencer
Manufacturer: YES
Manufacturer Synonyms: Yield Engineering Systems
Manufacturer Part Number: 01-790-0305187
Series: Logical Sequencer
Common Failures
Keypad malfunctions and display abnormalities are frequent issues with this product. Problems such as a non-responsive keypad, black lines across the display, or the screen showing only black rectangles have been reported. Memory components like the SRAM and microprocessors often contribute to these issues, alongside defective capacitors. Physical damage, such as a loose display ribbon cable or a short due to internal screw contact, has also been noted.
Repair Approach
Defective components, including keypads, memory ICs, microprocessors, capacitors, and cables, are replaced during repairs. Re-soldering connections and replacing outdated components like the SRAM are standard procedures. Additional operations include microprocessor replacements, logic chip replacements, and resolving mechanical integrity issues. Preventative maintenance often involves replacing components prone to aging or wear.
Testing & Quality
Post-repair, units undergo diagnostic testing and burn-in tests with load conditions to verify functionality across input and output components. Keyboards and displays are checked, and multiple testing iterations are performed to verify that operations function correctly. Co-checking by qualified technicians is part of the quality assurance process.
Service and repair your broken YES part
We can repair your YES model 01-790-0305187 in our facility. Let our skilled technicians get your YES back in operation quickly.
Step 1 - Click the green 'Repair Now' button above to add the part and then complete the RMA.
Step 2 - The RMA form will be sent to you via email. Print the RMA form and put it in a box with the item(s) for repair.
Step 3 - Ship or mail the box to the address listed on the RMA.
Once the user has seen at least one product this snippet will be visible.