CA03 SUB-C - 2123402

Sub board (CA03 Sub-C) — 2123402

The sub board (CA03 Sub-C, 2123402) is fitted to Epson printers. It ensures the electronic control of a machine sub-system and passes signals to the main board.

Its designation in the Epson parts list is "BOARD ASSY.,SUB", item 203 of the "ELEC-011" diagram for the Stylus Pro 7700, 7900 and 9900, where it sits alongside the main board "BOARD ASSY.,MAIN" (2129175), the power supply and the fan. On the Stylus Pro 7890 / 9890, the same item 203 is occupied by reference 2145686, given by distributors as the replacement for the 2123402 ("BOARD ASSY. SUB (was 2123402)").

Technical specifications

• OEM reference: 2123402
• Manufacturer: Epson
• Part type: Sub board
• Manufacturer designation: "BOARD ASSY.,SUB" (Epson), diagram "ELEC-011", item 203
• Location: Electronics bay, with the main board, the power supply and the fan (diagram "ELEC-011")
• Replaced by: 2145686 (same item 203 on the Stylus Pro 7890 / 9890)
• Note: The name "SUB-C" used in the title of this listing should be taken with caution: in the Epson parts list, the "SUB C" board is the 2124764 (item 202), while the 2123402 is the "BOARD ASSY.,SUB" of item 203, referred to as "AID Board" by some distributors. Reference 2123402 remains the order reference for this listing. Compatibility: the Stylus Pro 7700, 7900 and 9900 are confirmed by the Epson parts list; on the 9890, item 203 is occupied by the 2145686; the Stylus Pro 9700, 7710, 9710, 7910 and 9910 could not be verified against a parts list, and the Stylus Pro 9880, an earlier generation, is not cited by any source consulted: check the reference on the board in place before ordering.
• Shipping: Shipped ready to install

Compatibility & use

• Epson STYLUS PRO 77xx
• Epson STYLUS PRO 79xx
• Epson STYLUS PRO 97xx
• Epson STYLUS PRO 98xx
• Epson STYLUS PRO 99xx
• Before ordering, note the reference printed on the board in place: the Stylus Pro 7700 / 7900 / 9900 have four distinct "BOARD ASSY.,SUB" boards (items 201 to 204), which are not interchangeable with each other.

Function

• Ensures the electronic control of a sub-system
• Passes signals to the main board
• Acts as an interface between the firmware and the hardware

Signs of wear

• Sub-system not driven
• Electronic errors
• Internal communication loss
• Erratic behaviour or machine stoppages

Replacing this part restores the machine to proper working order.

Equivalent references : 2145686

Related parts

• 2145686 — Replacement "BOARD ASSY.,SUB" (Stylus Pro 7890 / 9890, item 203), also in our catalogue
• 2124763 — "BOARD ASSY.,SUB" item 201, known as "Sub-B" (Stylus Pro 7700 / 7900 / 9700 / 7890 / 9890)
• 2124764 — "BOARD ASSY.,SUB" item 202, known as "SUB C" (Stylus Pro 7700 / 7900 / 9700 / 9900 / 7890 / 9890)
• 2126128 — "BOARD ASSY.,SUB" item 204 (fourth sub board of diagram "ELEC-011")
• 2129175 — "BOARD ASSY.,MAIN": main board of the Stylus Pro 7700 / 7900 / 9900 to which the board is connected

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