AMI/Rowe Jukebox technical tips
Last update January 26, 2020
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Rowe Transistor Cross Reference PDF - thanks to Erwin Boot (Flamingo Records/Auto. Music Co. AU) for this list!
When first looking at an older AMI/Rowe jukebox (prior to 1970's) the very first item to be checked is the condition of the electrical cords within the jukebox AND the power cord for signs of deterioration. The 'lamp' cord used in most of the 40's to 60's models is breaking down by now and you will see at the plugs or on the wire itself that pieces of the insulation are shattering off. This is both a fire and safety hazard! You MUST replace any brittle wiring within the jukebox! This is a relatively easy job as this wire is normally just used for the lights and the amplifier, and can easily be traced, and replacement wire installed.
As for the power cord, be sure to flex it close to your ear and if you hear any crinkling sounds from inside the wire cable, then it too MUST be replaced.
Common problems with the AMI jukeboxes - including the Continental series - include:
Gummed selection pins due to the use of oil or WD-40 - these must not be lubricated! Here are pictures of the take-apart and reassembly process. Wash the pins in solvent along with the metal spring clips and the holes they fit in (Q-tip or similar) to get them moving smootly with no trace of gumminess. I think the pictures below are pretty clear, but can expand if requested..
SERVICE MANUAL AND PARTS CATALOG JUKEBOX ROWE AMI CD II - CMM4 CADETTE DE LUXE VIOLETTA (1971) Service Manual and Parts Catalog: gives information for the adjustments, sequenzes of operation, the complete parts list, schematics and more. 151 pages in English/German/Italian. 1 product rating - Rowe AMI MM 1 Jukebox Manual. Top Rated Seller. Rowe AMI JAN - Diplomat & JAO-Bandstand Jukebox Manual. AMI/Rowe Jukeboxes This section contains 5 Tables covering 172 AMI/Rowe Jukeboxes and accessories from 1927 to 1989. The Jukebox Tables included are generally complete in covering all major models, though some 'submodels' may be missing.
The wiper ring blades that connect the ferris wheel drum electricals to the machine are dirty.
Here are the wiper blades and their rings, you can see these from under the front of the mechanism towards the center..clean the copper rings with an ink eraser and check that the wipers have some pressure on the rings once remounted.
The microswitches that control the selection and cancel of the pins are faulty.
Check all the machines microswitches with an ohm-meter. The readings should be steady once the switch has 'clicked' (either way). If the reading bounces around while pushing on the microswitch actuator after hearing the click then I suggest you change the micro-switch. Best if you have an analog meter, but a digital one works fine as long as it is not one of those auto-ranging ones.
For the folks new to multimeters about the safest use you can put them to for servicing jukeboxes is the Resistance tests. These are all best done with the jukebox unplugged. You simply need to gain experience in reading resistance across contacts of switches, microswitches, and blade switches/wipers to learn if they are working correctly or not.
It is very important to have a good connection between the probes of your meter and the item you are testing. I recommend using a healthy pair of alligator jumper wires that with one end on each of the probe tips, and the other to grasp the lug of the switch in question and read the resistance when the switch is both open and closed.
A point to consider when testing switches is if the switch is still soldered into the circuit when the switch is open it still may indicate a short as an switch somewhere else in parallel with it may also be closed (cancel circuits for example)
I am using the convention that the letter 'R' is used to indicate the period place holder when measuring resistance.
With an ohm-meter (resistance) set to the lowest setting (200R or less) a good switch will show about 0.2 ohms (0R2) resistance - remember to check the lead resistance first and to mentally subtract that from any reading - probes shorted should show about 0R2 to 0R4 (ohms).
The cam switches (blade style for the A through K, microswitch after) are faulty - common symptoms are 8/10A Slo-Blo (1A Slo-Blo is OK, nothing higher please!) fuse pops and the gripper motor is jammed. Clean the cam switches carefully, do not lubricate with ANYTHING. Polish the contacts with a burnishing tool - you want the contact faces to reflect a smooth, mirror-like finish..
Symptoms/Problems:
Slow gripper motor. and/or rotation of ferris wheel -check for 24VDC at the motor when the motor is running, it should be no less than 24V. If it is then check the bridge rectifier in the transformer/fuse box, if it is a Selenium Rectifier (a series of metal plates on a central shaft with three or four lugs that wires are soldered to) then you probably need to replacc it with a modern Silicon Bridge rectifier (10A/100PIV minimum) taking care to match the negative and positive and AC terminals to the old part. I'll post some pictures the next time we do this conversion.. Some folks are still making these.
These pictures show various test points and assemblies used in the Ferris wheel style Rowe/AMI jukeboxes.
This is the side A / B rocker showing the spring assembly if you've taken it apart and can't recall how it goes back together..
Here are the !@#$! cam switch blades..I dismount them for ease of cleaning.. checking alignment carefully when putting back!
PDFs now available for the AMI Model D: R-200 Mechanism Service Manual (D-40) This needs to be printed on Ledger size paper - 11' X 17' and then folded. 3.66mb in size..
Full copies of most of the early AMI manuals are available from us for $25 - $35, email the model you need.
Super annoying, as I neither need nor want to know what my colleagues are doing at every moment, and if I did, I could just checkthe calendar.I have already disabled the notifications/reminders for my own calendar, but this keeps happening. Setting up zimbra calendars for mac. Is there a way to completely disable calendar reminders from the shared calendars, while keeping the notifications for my own?Thanks. However, every time a scheduled event nears, I get a reminder. Hello,I recently set up a number of shared calendars for my workplace.
1980s & 90s ROWE/AMI jukebox tips..
Many of the record playing mechansims may have trouble lifting the tone arm enough so that the sytlus needle will clear the gripped bow, due to wear on the lift portion of the tonearm CAM. The solution is simple, simply bend the lift lever slightly either inwards or outwards from the worn indent by about 2cm (3/4') and then adjust the tone arm lift for proper clearance. A dab of grease where the lift link rides up the cam would be in order as well.
Gummed selection pins due to the use of oil or WD-40 - these must not be lubricated! Here are pictures of the take-apart and reassembly process. Wash the pins in solvent along with the metal spring clips and the holes they fit in (Q-tip or similar) to get them moving smootly with no trace of gumminess. I think the pictures below are pretty clear, but can expand if requested..
SERVICE MANUAL AND PARTS CATALOG JUKEBOX ROWE AMI CD II - CMM4 CADETTE DE LUXE VIOLETTA (1971) Service Manual and Parts Catalog: gives information for the adjustments, sequenzes of operation, the complete parts list, schematics and more. 151 pages in English/German/Italian. 1 product rating - Rowe AMI MM 1 Jukebox Manual. Top Rated Seller. Rowe AMI JAN - Diplomat & JAO-Bandstand Jukebox Manual. AMI/Rowe Jukeboxes This section contains 5 Tables covering 172 AMI/Rowe Jukeboxes and accessories from 1927 to 1989. The Jukebox Tables included are generally complete in covering all major models, though some 'submodels' may be missing.
The wiper ring blades that connect the ferris wheel drum electricals to the machine are dirty.
Here are the wiper blades and their rings, you can see these from under the front of the mechanism towards the center..clean the copper rings with an ink eraser and check that the wipers have some pressure on the rings once remounted.
The microswitches that control the selection and cancel of the pins are faulty.
Check all the machines microswitches with an ohm-meter. The readings should be steady once the switch has 'clicked' (either way). If the reading bounces around while pushing on the microswitch actuator after hearing the click then I suggest you change the micro-switch. Best if you have an analog meter, but a digital one works fine as long as it is not one of those auto-ranging ones.
For the folks new to multimeters about the safest use you can put them to for servicing jukeboxes is the Resistance tests. These are all best done with the jukebox unplugged. You simply need to gain experience in reading resistance across contacts of switches, microswitches, and blade switches/wipers to learn if they are working correctly or not.
It is very important to have a good connection between the probes of your meter and the item you are testing. I recommend using a healthy pair of alligator jumper wires that with one end on each of the probe tips, and the other to grasp the lug of the switch in question and read the resistance when the switch is both open and closed.
A point to consider when testing switches is if the switch is still soldered into the circuit when the switch is open it still may indicate a short as an switch somewhere else in parallel with it may also be closed (cancel circuits for example)
I am using the convention that the letter 'R' is used to indicate the period place holder when measuring resistance.
With an ohm-meter (resistance) set to the lowest setting (200R or less) a good switch will show about 0.2 ohms (0R2) resistance - remember to check the lead resistance first and to mentally subtract that from any reading - probes shorted should show about 0R2 to 0R4 (ohms).
The cam switches (blade style for the A through K, microswitch after) are faulty - common symptoms are 8/10A Slo-Blo (1A Slo-Blo is OK, nothing higher please!) fuse pops and the gripper motor is jammed. Clean the cam switches carefully, do not lubricate with ANYTHING. Polish the contacts with a burnishing tool - you want the contact faces to reflect a smooth, mirror-like finish..
Symptoms/Problems:
Slow gripper motor. and/or rotation of ferris wheel -check for 24VDC at the motor when the motor is running, it should be no less than 24V. If it is then check the bridge rectifier in the transformer/fuse box, if it is a Selenium Rectifier (a series of metal plates on a central shaft with three or four lugs that wires are soldered to) then you probably need to replacc it with a modern Silicon Bridge rectifier (10A/100PIV minimum) taking care to match the negative and positive and AC terminals to the old part. I'll post some pictures the next time we do this conversion.. Some folks are still making these.
These pictures show various test points and assemblies used in the Ferris wheel style Rowe/AMI jukeboxes.
This is the side A / B rocker showing the spring assembly if you've taken it apart and can't recall how it goes back together..
Here are the !@#$! cam switch blades..I dismount them for ease of cleaning.. checking alignment carefully when putting back!
PDFs now available for the AMI Model D: R-200 Mechanism Service Manual (D-40) This needs to be printed on Ledger size paper - 11' X 17' and then folded. 3.66mb in size..
Full copies of most of the early AMI manuals are available from us for $25 - $35, email the model you need.
Super annoying, as I neither need nor want to know what my colleagues are doing at every moment, and if I did, I could just checkthe calendar.I have already disabled the notifications/reminders for my own calendar, but this keeps happening. Setting up zimbra calendars for mac. Is there a way to completely disable calendar reminders from the shared calendars, while keeping the notifications for my own?Thanks. However, every time a scheduled event nears, I get a reminder. Hello,I recently set up a number of shared calendars for my workplace.
1980s & 90s ROWE/AMI jukebox tips..
Many of the record playing mechansims may have trouble lifting the tone arm enough so that the sytlus needle will clear the gripped bow, due to wear on the lift portion of the tonearm CAM. The solution is simple, simply bend the lift lever slightly either inwards or outwards from the worn indent by about 2cm (3/4') and then adjust the tone arm lift for proper clearance. A dab of grease where the lift link rides up the cam would be in order as well.
R-86 and earlier models in the R-XX series, these all used single sided Printed Circuit Boards (PCBs) and this creates a problem with the Molex pin connectors used to connect any of these boards to the jukebox wiring harness - the solder connections can fracture at the base of the pin. So, what our shop does before doing any other repairs is we remove the Central Credit Computer, the Coin Programming PCB, and the Mechanism Control PCB and we touch up all the pin connections where they are soldered to the logic boards. In many cases you will see cratering around the pin in the solder connection
Central Computer PCB pins - examples of cracked solder connections and repairs:, and battery location:
Rowe Ami Jukebox Troubleshooting
Mech Control PCB:
Rowe Ami Jukebox Manual
Free movies sites online no sign up. Pricing Control PCB - examples of cracked solder connections and repairs:
