Keypad Mezzanine Board - Konica Minolta bizhub 43 Service Manual

DN 3000329392 - 03
21 GND
22 VR
23 VG
24 VB
25 AVDD
26 GND
P301 : Touch screen interface for LCD panel
Pin Signal name
1 X-
2 Y-
3 X+
4 Y+
• P302 : LCD panel inverter
Pin Signal name
1 HV
2 LV
BE CAREFUL : The Inverter generates AC High Voltage.
To handle with care.
Attention - The "HFFv2 LCD PANEL TOP EQUIPPED" integrates a touch screen panel, that
need to be calibrated.
The calibration data are stored in the Mainboard Eeprom.
In case of replacement from the Front panel Sub assembly, the touch screen panel
calibration have to be performed
3.3 HFF 2
V KEYPAD SUB ASSEMBLY
The "HFFV2 Keypad W/FP Reader Equipped" is a Keypad sub-assembly, done to be managed and
tested independently.
The "HFFV2 Keypad W/FP Reader Equipped" is done from:
• The HFxv2 Keypad board
• The HFxv2 Keypad Mezzanine board
• One plastic cover and 2 light guides
• HFFv2 Keypad ASM
• One metal part
- 24 -
- Ground for logic circuit
O Alternated video signal input (Red)
O Alternated video signal input (Green)
O Alternated video signal input (Blue)
- +5V Supply voltage for analog circuit
- Ground for analog circuit
Input /
output
I Touch screen horizontal feedback
I Touch screen vertical feedback
I/O Touch screen horizontal drive & feedback
I/O Touch screen vertical drive & feedback
Input /
output
O High Voltage drive
- Inverter ground and feedback (High Voltage)
Description
Description