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3-3
3.4
SYSCON CIRCUIT
Note:
•
When perform this adjustment, remove the Mechanism
assembly.
3.4.1
Timer clock
Signal
(A)
• No signal
Mode
(B)
• EE
Equipment
(C)
• Frequency counter
[HR-J271MS/J471MS]
Measuring point (D1)
• IC3001 pin 29
(D2)
• IC3001 pin 57
(D3)
• C3015 + and –
[HR-J677MS/J777MS]
Measuring point (D1)
• IC3001 pin 61
Short point
(D2)
• IC3001 pin 24
(D3)
• C3026 + and –
Adjustment part
(F)
[HR-J271MS/J471MS]
• C3018 (TIMER CLOCK)
[HR-J677MS/J777MS]
• C3025 (TIMER CLOCK)
Specified value
(G)
• 1024.008
±
0.001 Hz
(976.5549
±
0.0010
µ
sec)
[HR-J271MS/J471MS]
(1) Connect the frequency counter to the measuring point
(D1).
(2) Connect the short wire between the short point (D2) and
GND.
(3) Short the leads of capacitor (D3) once in order to reset
the microprocessor of the SYSCON.
(4) Adjust the Adjustment part (F) so that the output fre-
quency becomes the specified value (G).
[HR-J677MS/J777MS]
(1) Connect the frequency counter to the measuring point
(D1).
(2) Connect the short wire between the short point (D2) and
Vcc (5V).
(3) Short the leads of capacitor (D3) once in order to reset
the microprocessor of the SYSCON.
(4) Disconnect the short wire between the short point (D2)
and Vcc then connect it again.
(5) Adjust the Adjustment part (F) so that the output fre-
quency becomes the specified value (G).
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www.freeservicemanuals.info
4/5/2017
Digitized in Heiloo Netherland