3-2
ONE POINT REPAIR GUIDE
1. NO POWER PROBLEM
No power problem occurs when you power on the unit.
1-1. Solution
Replace X100, IC101, IC103.
1-2. How to troubleshoot (Countermeasure)
1) Check X100 (Crystal).
If it does not oscillate, change X100.
2) Check IC103 (Reset IC).
If its output voltage is not more than +2.7 V, change IC103.
3) Check IC101 (Micom).
After power is on if the pin8 of IC101 is not ‘High’, change IC101.
But, the new
μ
-com IC need to write program.
1-3. Service hint (Any picture / Remark)
IC101
IC103
X100
< MAIN board top view >
Summary of Contents for CM2630B
Page 19: ...2 8 A60L A60R 4 SPEAKER SECTION ...
Page 39: ...3 20 5 USB Figure 5 1 USB D D IC501 Pin117 118 D D 26 25 25 26 ...
Page 40: ...3 21 6 CRYSTAL Figure 6 1 12 MHZ CRYSTAL IC101 Pin57 58 XI XO 27 28 27 28 ...
Page 41: ...3 22 MEMO ...
Page 57: ...3 53 3 54 2 MAIN P C BOARD TOP VIEW ...
Page 58: ...3 55 3 56 MAIN P C BOARD BOTTOM VIEW ...
Page 59: ...3 57 3 58 3 VFD TOUCH TOP JACK P C BOARD TOP VIEW ...
Page 60: ...3 59 3 60 VFD TOUCH TOP JACK P C BOARD BOTTOM VIEW ...
Page 61: ...3 61 3 62 MEMO MEMO ...
