katamei to seizoubangou wo kakuninsi sidai, syuuriirai wo dasimasu.

Here, verb stem + 次第 means as soon as ... or once ....

So:

• 確認し次第 = as soon as I/we confirm
• The whole sentence means that the second action happens right after the first one.

This pattern is common in formal Japanese, especially in business emails, notices, and customer support language.

Because 次第 attaches to the verb stem, not to the て-form.

• 確認する → verb stem 確認し
• 確認し + 次第 → 確認し次第

So this is a fixed grammar pattern:

• 分かり次第 = as soon as I know
• 準備でき次第 = as soon as it is ready
• 確認し次第 = as soon as I confirm

Using 確認して次第 would be ungrammatical here.

Yes, ～次第 is more formal than ～たら.

Compare:

• 確認し次第、修理依頼を出します。
  Very natural in business or professional writing.
• 確認したら、修理をお願いします。
  More conversational and less formal.

So ～次第 is often used when the speaker wants to sound professional, official, or procedural.

A rough nuance difference:

• ～たら = when/if/after
• ～次第 = as soon as, immediately once

形名 is a technical or business term used for a product’s model name or model designation.

In natural English, it may be translated as:

• model name
• model number
• model designation

The exact English wording depends on the product and company.

It is not an especially casual everyday word; it sounds like something you would see in manuals, product labels, or support communication.

製造番号 literally means manufacturing number, but in most real contexts it is best understood as serial number.

So:

• 形名 identifies the type/model
• 製造番号 identifies the specific individual unit

That is why these two are often asked for together in repair or warranty situations.

Here, と simply means and.

So:

• 形名と製造番号 = the model name and the serial number

This is the normal way to connect nouns in a complete list.

Because 形名と製造番号 is being treated as one combined object of 確認し.

So the structure is:

• [形名と製造番号] を 確認し次第
• check [the model name and serial number]

In Japanese, when two nouns are joined by と, you usually put the case particle after the whole group:

• AとBを確認する
• AとBを送る
• AとBを比べる

That is why you do not need a separate を after each noun.

Literally, 出す means something like put out, send out, or submit.

In business Japanese, 出す is very often used for submitting or issuing things such as:

• 申請を出す = submit an application
• 報告書を出す = submit a report
• 依頼を出す = submit/send a request

So 修理依頼を出します means:

• submit a repair request
• put in a repair request
• send a repair request

It sounds procedural, as if there is a formal system or workflow.

Both are possible Japanese, but the nuance is different.

• 修理を依頼します = I will request a repair
• 修理依頼を出します = I will submit/file a repair request

The sentence you gave sounds more administrative. It focuses on the act of entering or sending the request into a system, not just the general idea of asking for a repair.

So this wording is especially natural in workplace, customer support, or internal company communication.

Because Japanese non-past forms cover both:

• present
• future

So 出します can mean:

• I submit
• I will submit

In this sentence, the future meaning is clear from context because the submission will happen after the confirmation.

This is very normal Japanese usage.

Japanese often leaves the subject unstated when it is understood from context.

So the sentence does not explicitly say who will do these actions. Depending on the situation, it could mean:

• I will confirm ... and submit ...
• We will confirm ... and submit ...

In business communication, we is often the most natural English translation, especially if a company representative is speaking.

Yes, it is the same word 次第, but it appears in different patterns with different meanings.

Common patterns include:

• verb stem + 次第 = as soon as ...
  • 確認し次第
• noun + 次第で = depending on ...
  • 状況次第で
• そのような次第です = that is the situation / those are the circumstances

So the core word is the same, but the meaning changes depending on the grammar pattern around it.