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11
BB-HCM580A
[LENS drive motor control]
The CPU controls the driver (IC901) for the LENS motor drive that is mounted on the LENS board by the three-wire serial sig-
nals (SDI, SCL, and MO_LD) and by the motor drive timing signal (VD_MOT). The output current, pulse period, and the number
of pulses are also set up by the driver. This LENS motor drive driver (IC901) controls both of the ZOOM lens drive and FOCUS
lens drive motors using the micro step drive control method. The power supply to drive the motors is +5.7V that is supplied by
the DC-DC converter circuit on the TILT board via the VIDEO board.
[IRIS drive control]
The IRIS has been adjusted in the factory and the adjusted values are saved in the Flash memory (IC104) on the CPU board. In
the initialization process when the power is turned ON, the adjusted values are written in the DA converter (IC903) on the LENS
board. No subsequent process to write the data into the DA converter will be carried out. Once the adjusted values are written in
the DA converter, the output voltage from the DA converter can be controlled. The DA output is applied in the IRIS control cir-
cuit. The IRIS unit of the lens is controlled with the method called the Pulse Width Modulation (PWM).
[LED control]
Red and green LEDs are used in the LED (LED901) indicator. LEDs are turned on, blinked or turned off by turning ON/OFF the
transistors (Q901 and Q902) that are connected to the LEDs. The transistors are turned ON/OFF from the output port of the
CPU (IC102) on the CPU board.
LED_R
LED_G
Q901
Q902
LED COLOR
H
H
ON
ON
Orange
H
L
ON
OFF
Red
L
H
OFF
ON
Green
L
L
OFF
OFF
OFF the light
Summary of Contents for BB-HCM580A
Page 18: ...18 BB HCM580A 6 Installation Instructions 6 1 Installation Guide ...
Page 19: ...19 BB HCM580A ...
Page 20: ...20 BB HCM580A ...
Page 21: ...21 BB HCM580A 6 2 Setup Guide ...
Page 22: ...22 BB HCM580A ...
Page 23: ...23 BB HCM580A 7 Troubleshooting Guide 7 1 Basic Operation ...
Page 24: ...24 BB HCM580A 7 2 Other Function Check ...
Page 25: ...25 BB HCM580A 7 3 Power Supply Block Check ...
Page 26: ...26 BB HCM580A 7 4 CPU Peripheral Block Check ...
Page 27: ...27 BB HCM580A 7 5 LVDS Block Check ...
Page 28: ...28 BB HCM580A 7 6 Image Block Check ...
Page 29: ...29 BB HCM580A 7 7 LAN Block Check ...
Page 30: ...30 BB HCM580A 7 8 Motor Block Check ...
Page 31: ...31 BB HCM580A 7 9 Lens Block Check ...
Page 32: ...32 BB HCM580A ...
Page 33: ...33 BB HCM580A 7 10 I O Terminal Check ...
Page 34: ...34 BB HCM580A 7 11 SD Card Block Check ...
Page 35: ...35 BB HCM580A 7 12 RTC Circuit Check ...
Page 36: ...36 BB HCM580A 7 13 LED Circuit Check ...
Page 37: ...37 BB HCM580A 7 14 Diagnosis NG Check ...
Page 38: ...38 BB HCM580A 7 15 Version Upgrade Check ...
Page 72: ...72 BB HCM580A F1 F2 H1 H2 H3 H4 G AH1 AH2 AH3 AH4 D1 D2 B C1 C2 E1 E2 ...
Page 73: ...73 BB HCM580A N1 L3 L2 L1 J6 J5 J4 J1 J2 J3 K1 K2 M1 M2 K3 I3 I2 I1 N2 N3 N1 N2 N3 ...
Page 74: ...74 BB HCM580A O P1 X4 X1 X3 X2 Y1 Y2 Y3 Z4 Z1 Z3 Z2 PanScan ...
Page 85: ...85 BB HCM580A 14 2 Accessories and Packing Materials ...