The unit will not read discs at all. Can anyone help here with service manal or factory alignment procedure?
I suspect it could be a faulty transport??
Not getting much out of IAG yet...
I suspect it could be a faulty transport??
Not getting much out of IAG yet...
Give us some background. What exactly does it do? Has it been working, when did it stop? Did it work when you got it? If you bought it, was it dead? Gurantee?
Jan Didden
Jan Didden
Hello;
the 77CD hasn`t got any adjustment facilities inside. The whole servo circuit is digital. I would suggest to change the Pickup first, this is the main problem which occurs. However QUAD had some problems when releasing the item in the middle 90`s, and so it came that they issued a second release of the servo software. Normally the sofware version is displayed for some seconds after switching the unit on. If not, you may check out the version of your player by dismantling the transport and look for a badge on one of the larger IC`s, such as "QUAD77CD Ver X.XX". You should at least have version 1.9... Earlier versions had various malfunctions.
regards,
audiomatic
the 77CD hasn`t got any adjustment facilities inside. The whole servo circuit is digital. I would suggest to change the Pickup first, this is the main problem which occurs. However QUAD had some problems when releasing the item in the middle 90`s, and so it came that they issued a second release of the servo software. Normally the sofware version is displayed for some seconds after switching the unit on. If not, you may check out the version of your player by dismantling the transport and look for a badge on one of the larger IC`s, such as "QUAD77CD Ver X.XX". You should at least have version 1.9... Earlier versions had various malfunctions.
regards,
audiomatic
thanks for your reply audiomatic.
If I load a disc it just sits there the display shows something like
-- -----
There is no loading sound to be heard and the counter will not display any TOC.
I took the transport apart and the small square (MPU?) chip has V2.1. The servo pcb# is 137913A. Assuming it is a faulty pickup do you know what Phillips part that will fit?
If I load a disc it just sits there the display shows something like
-- -----
There is no loading sound to be heard and the counter will not display any TOC.
I took the transport apart and the small square (MPU?) chip has V2.1. The servo pcb# is 137913A. Assuming it is a faulty pickup do you know what Phillips part that will fit?
Hello;
servo software 2.1. should work fine, regarding the pickup I am not sure but I think it must be a CDM 12.4; you should look for a badge at the CD transport.
kind regards, audiomatic
servo software 2.1. should work fine, regarding the pickup I am not sure but I think it must be a CDM 12.4; you should look for a badge at the CD transport.
kind regards, audiomatic
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