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PCB EXPLANATION
ＭＵＸ-１００ SERVICEMANUAL ５ - ６
5-4 MUX CHARGE -04A
Function
1. Detection the battery voltage and
charged voltage error.
2.
Controls the battery charging current, and detects charging current error.
3.
Inverter circuit for the starter and the collimator lamp.
MUX CHARGE-04A PCB has almost same function and circuit with MUX CHARGE-99 PCB, which is used for
MUX-100/100H series. (However, they don’t have compatibility.)
The circuit for battery charging was changed from MUX CHARGE-99 PCB, and MUX CHARGE-04A PCB uses the
inverter for charging. (MUX CHARGE-99 PCB uses SSR for charging.)
The inverter itself is included in MUX CHARGE-04B PCB.
During PCB replacement
The VR1 (Lamp), the VR2 (Starter) and the VR3 (Reference frequency) should be adjusted.
Refer to Appendix C.2 of Installation Manual.
As well, confirm the detected battery charged voltage referring to “6-2-3 Confirmation of battery voltage detection”.
LED list
LED No. Signal Name Description
LD1 CHON Lights ON during charging the battery.
LD2 LAMP ON Lights ON when 60Hz inverter is working ON.
LD3 STON Lights ON when collimator lamp is selected for 60Hz inverter
VR list
Name Function How to adjust
VR1 Inverter pulse for Lamp
VR2 Inverter pulse for Starter
VR3 Reference frequency ( 120Hz)
Refer to “Appendix C.2
Adjustment Method for MUX
CHARGE-04A” in Installation
Manual.
Check pin list
CP No. Signal Name Description
CP1 -15V
CP2 GND
CP3 +15V
CP4 VP1 Measured charged voltage 3V/ 100V
CP5 VP2 Measured charged voltage 3V/ 100V
CP6 Q2 Gate pulse for Starter and Lamp
CP7 Q1 Gate pulse for Starter and Lamp
CP8 GND
CP9 IC Measured charging current 1V/1A
CP10 120+ Measured charged voltage 3V/ 100V
CP11 120- Measured charged voltage 3V/ 100V
CP12 60+ Not use
CP13 60- Not use
CP14 50kHz
CP15 GND
CP16 120Hz Reference frequency for Starter and Lamp
CP17 Lamp/Starter Lamp/Starter change over
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