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HP97 The journey begins
01-13-2019, 06:01 AM
Post: #21
RE: HP97 The journey begins
Hi all,

Looks like I finally found a fork in the road.

On full reassembly, I pressed the paper advance switch and a horrible growl came out of the printer.

On inspection I found a stripped drive cog. As it has been working quite ok up to this point my first thought was I put the switch connections on wrong, but no and the home switch works fine.

I took the cog out and I just put slight pressure on a cog tooth and it broke off and is almost powdery, so it too looks like it too has deteriorated over time.

I've haven't heard this problem mentioned as yet, and I guess these are as scarce as hens teeth too.

Ahh well, must be beer o'clock...

cheers

Tony


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01-13-2019, 06:12 AM
Post: #22
RE: HP97 The journey begins
Is this the idler gear mentioned by Paul Berger earlier?

Pauli
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01-13-2019, 06:51 AM
Post: #23
RE: HP97 The journey begins
(01-13-2019 06:12 AM)Paul Dale Wrote:  Is this the idler gear mentioned by Paul Berger earlier?

Pauli

Hi Paul,

Yes, the one between the motor gear and the final black gear that drives the head mechanism. looks like it has crumbled after a few uses.

cheers

Tony
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01-13-2019, 07:04 AM
Post: #24
RE: HP97 The journey begins
(01-13-2019 06:51 AM)teenix Wrote:  Yes, the one between the motor gear and the final black gear that drives the head mechanism. looks like it has crumbled after a few uses.

Looks like some aluminium ones might be available for $US45 which seems steep
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01-13-2019, 08:06 AM
Post: #25
RE: HP97 The journey begins
Now and then there is an offer on the idler gear made from brass on German TAS site. Me Smile.
Ships worldwide. Less than 20 Euro.
Andi
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01-13-2019, 02:30 PM
Post: #26
RE: HP97 The journey begins
(01-13-2019 04:58 AM)teenix Wrote:  I switched to PGM mode and wrote 5 + 7 enter and put in a blank card and through it went.

Presumably the program was actually "5 Enter 7 +" Wink

--Bob Prosperi
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01-13-2019, 06:39 PM
Post: #27
RE: HP97 The journey begins
(01-13-2019 02:30 PM)rprosperi Wrote:  
(01-13-2019 04:58 AM)teenix Wrote:  I switched to PGM mode and wrote 5 + 7 enter and put in a blank card and through it went.

Presumably the program was actually "5 Enter 7 +" Wink

My body turns 60 this month, I think my brain is miles ahead Smile

cheers
Tony
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