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1

 

 
 

(UUT = Unit Under Test) 

 
NOTE:  Besides checking the serial number on the unit,  it can be determined if the unit has the older version 
of the software (and needs to be upgraded) by the following test: 
 
1)  One CDR2 remote control needs to be permanently modified for these tests; cut a section of the outer 

foilcal label (with an exacto knife) in the area of the buttons between the “0” on the keypad and the A-B 
button.  It is easiest to cut a small rectangular flap there, instead of trying to cut a small circle  (see 
illustration) 

2)  Turn the UUT on, with no discs inserted. Let it stabilize 30 seconds until the display no longer changes. 
3)  Press the CDP button on the remote. 
4)  Press the now-exposed special button on the remote. 
5)  Press the PROG. button on the remote. 
6)  Both displays should now show a 6 digit number.  If both numbers start with 99 the unit needs to be 

upgraded. 

7)  Press the now-exposed special button on the remote again to return the UUT to a normal state, or simply 

turn the power button OFF. 

 
 
 

 

 

 

2

 
 

UPGRADE PROCEDURE 

 
The CDR2 Upgrade Procedure consists of a computer-aided software change to the UUT by a supplied 
interface board connected to the serial port (COM1 on most computers) and plugging a molex connector on 
the opposite end of the board into the CDR2.  The computer should be a PC, no system requirements I know 
of other than should be running any version of Windows. 
 
1)  CDP (Play deck) upgrade: 

a) 

Turn the UUT upside down, on a padded surface.  It should be plugged in, but turned OFF. 

b) 

The interface board should now be the correctly connected to the serial port on the computer. 

c) 

Connect the molex connector on the opposite end of the board into the UUT; the 6 pin connector is 

exposed and is near the middle of the bottom panel. 

d) 

Turn the UUT ON with the power button. 

e) 

Start the software procedure on the computer; the upgrade will take approximately 6 minutes. 

f) 

After completed, computer monitor should display OK. 

g) 

Turn the UUT OFF.  Unplug the molex connector from the UUT. 

 
2)  CDR (Record Deck) upgrade: 

a) 

Remove the right front foot on the UUT to access the molex connector. 

b) 

Connect the interface board molex connector into the UUT; the 6 pin connector is in a recess, and may 

require the help of a tool (like a small screwdriver) to mate with the female connector.  USE CAUTION.  
It’s easy to bend the pins by being too rough. 

c) 

Turn the UUT ON with the power button. 

d) 

Start the software procedure on the computer; the upgrade will take approximately 6 minutes. 

e) 

After completed, computer monitor should display OK. 

f) 

Turn the UUT OFF. Unplug the molex connector from the UUT. 

g) 

Replace the front foot. 

 
3) Check that the upgrade has been successful by checking with a modified remote control with the 

procedure at the top of page 1.