Kusurlar tablosunda hafif kusur yazıyor; hâlbuki ben ağır kusur bekliyordum.

This is a noun compound plus a case ending:

• kusur-lar = faults
• tablo-su = its table / table of ...
• tablo-su-nda = in/on the table

So kusurlar tablosunda means in/on the table of faults or on the fault chart.

A key point for learners: Turkish often expresses X of Y with a noun compound, not with a separate word like of. That is why you get tablosunda, not just tabloda.

Also, the locative ending appears as -nda here because it is added after the compound ending -su.

Because the phrase refers to a chart or table that contains multiple fault categories or entries.

So kusurlar tablosu is basically the table/chart of faults. Using the plural here sounds natural because the chart is not about one single fault; it is about fault classifications in general.

Here, kusur means fault, blame, or responsibility, especially in a formal context such as:

• a traffic accident report
• an insurance assessment
• a legal/official document

So hafif kusur and ağır kusur are not about a physical defect in an object. They mean something more like:

• hafif kusur = minor fault / lesser responsibility
• ağır kusur = major fault / serious responsibility

Literally, yes:

• hafif = light
• ağır = heavy

But in this sentence they are being used figuratively:

• hafif kusur = minor/slight fault
• ağır kusur = serious/major fault

This is very common in Turkish. Just like English can use serious or heavy metaphorically, Turkish uses ağır for things that are severe or serious.

Here yazıyor does not mean that someone is actively writing at this moment. In Turkish, yazıyor can also mean:

• it says
• it is written
• it shows

So Kusurlar tablosunda hafif kusur yazıyor means something like:

• The fault chart says minor fault
• It is listed as minor fault on the chart

This is a very common Turkish way to talk about what a document, sign, screen, or form says.

For example:

• Bilette saat 8 yazıyor. = It says 8 o’clock on the ticket.

That is true: Turkish often drops pronouns because the verb ending already shows the person.

So bekliyordum already means I was expecting.

But ben is added here for emphasis or contrast. It gives the sense of:

• but I was expecting...
• whereas I expected...

So the speaker is contrasting:

• what the chart says
• what they personally expected

Without ben, the sentence would still be grammatical, just a little less emphatic.

Bekliyordum is the past continuous/imperfect-like form: I was expecting.

That fits very well here because the speaker is describing their prior expectation at the time they looked at the chart.

• bekliyordum = I was expecting
• bekledim = I waited / I expected, but often with a different feel and less natural here

In this sentence, bekliyordum expresses a mental expectation that existed before seeing the result.

If you said bekledim, it could sound more like I waited or at least less natural for this kind of contrast.

Because beklerdim usually means something like:

• I would expect
• I used to expect
• I would have expected
  depending on context

That form is more hypothetical or general.

But here the speaker is talking about a specific real past expectation regarding this specific case. So bekliyordum is the natural choice:

• I was expecting major fault
• not I would expect major fault

Because they are being used as labels/classifications, not as fully individualized objects.

In this context:

• hafif kusur yazıyor = it says/lists minor fault
• ağır kusur bekliyordum = I was expecting the classification major fault

Turkish often uses bare nouns this way when talking about categories, labels, or types.

Why no bir?

• bir ağır kusur would sound more like a major fault as one item
• here the speaker means the official classification label, so bare ağır kusur is more natural

Why no accusative?

• the accusative usually marks a specific/definite direct object
• here the speaker is not pointing to one already identified object, but to a category/result

So the bare form feels more natural.

Hâlbuki means something like:

• whereas
• however
• but actually
• and yet

It introduces a stronger contrast than simple ama.

So the sentence is not just saying but. It is more like:

• the chart says minor fault; however, I was expecting major fault
• the chart says minor fault, whereas I was expecting major fault

It often carries the idea that the second clause goes against what seemed likely or expected.

Yes, you may see both hâlbuki and halbuki.

In everyday writing, many people write halbuki without the circumflex. The meaning is the same. The version with â is a more careful or traditional spelling.

So as a learner, the important thing is simply to recognize both forms as the same word.

It is natural Turkish word order, but Turkish is flexible.

The sentence is structured like this:

• Kusurlar tablosunda = sets the location/source first
• hafif kusur = gives the content
• yazıyor = final verb, as Turkish often does

Then:

• hâlbuki ben = introduces contrast, with emphasis on I
• ağır kusur = what the speaker expected
• bekliyordum = final verb

So the sentence feels very natural and well organized:

1. what the document says
2. contrast
3. what I expected instead

That is why it sounds smooth in Turkish.