Is there a way to deposit a check to the QuickBooks checking account?

Yes, there is, don103.

You'll have to deposit it to your bank and then transfer it to your QuickBooks Checking account. 

Please note that you have to choose the Add funds to this deposit option from the bank deposit window and select checks as the payment method.

I'll be glad to walk you through the steps on how to accomplish this:

1. Navigate to the +New button and choose Bank Deposit. 
2. Pick the Account where the funds will be deposited.
3. In the Received From section, choose where the money is coming from.
4. Select the customer's account.
5. Hit Check as the Payment Method.
6. Enter the Amount. 
7. Then, Save and close.  

Once done, you can now transfer the money to your QB Checking account. Here's an article you can refer to for the detailed steps: Use your QuickBooks Checking account.

Don't hesitate to get back to me if you have other questions or concerns about managing an account in QuickBooks. I'm always here to help.