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CHAPTER 6.
ADJUSTMENT
PC·7200 series MFD setup
The following settings are required to use the MFD for the
PC~7200.
I~
oPC-7201
oPC-7202
oCE-72IF
oPC-7202
(Drive B)
(Drive A)
oCE-720F
oPC-7221
SWI
ON
OFF
<-
SW2
OFF
<-
<-
SW3
OFF
ON
<-
SW4
ON
OFF
<-
SW5
OFF
<-
<-
SW6
OFF
<-
<-
SW7
ON
<-
<-
SW8
OFF
<-
<-
T1
SS
<-
T2
OC
<-
NOTE1: Use a fine tipped item such as a pair of tweezers to set SW1 to SWB.
PC·7200 timer error adjustment
[Purpose]
To adjust timer accuracy, the timer basic clock frequency may be adjusted using the trimmer capacitor.
[Instrument required]
-
P C-7200
Type UT -300 or UT300A error adjusting tool or frequency counter.
[Measuring method]
1. Connect the power cable of the instrument with the wall outlet and turn power on after a lapse of more than 15 minutes which is required for the
instrument to become stable.
2. Apply probes to test pins, TP1 and TP7 (GND) of the main board.
3. Connect power supply, MFD, LCD, or CRT to the main board and turn power on. Insert the test disk in the MFD.
4. After ensuring that "LOADING OK" appeared in the display, adjust the timer error to the room temperature using the trimmer capacitor, in reference
to the table below.
Room temperature Daily error (sec/day)
Nominal value
14 - 16'C
-0.25 - +0.65
(+0.25)
16 - 18'C
-0.20 - +0.85
(+0.35)
18 - 20'C
+0.20
+1.00
(+0.45)
20 - 30'C
-0.20 -
+1.15
(+0.55)
6 -1
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