DOWNLOAD Panasonic BB-HCM715CE / BB-HCM735CE Service Manual ↓ Size: 3.52 MB | Pages: 83 in PDF or view online for FREE

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Pan and tilt are conducted by controlling the motor driver (IC302) using the signal from GPIO inside of IC101, which is mounted
on the CPU board. Also, detection of the home position for operating the pan and tilt are performed with the pan photo sensor
(IC116 on the CPU board) and the tilt photo sensor (IC2 on the FPC board).
This detected signal is transmitted to GPIO at IC101 after being shaped at IC403.

• +3.3V is brought about by the power supply of +12V from the PoE (Power over Ethernet) circuit on the PoE board via the DC-DC

converter circuit composed of IC402, Q401, D402, L402, C408 and C413.

• +3.1 V for an analog power supply circuit of IC101 is generated by the series regulator (IC406).
• +1.8 V for power supply of IC103 and IC104 is generated by the series regulator (IC106).
• +1.2V for an internal circuit of IC101 is generated by the series regulator (IC107).

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The power supplied from a LAN cable receives 48 V via a diode bridge from a RJ-45 connector (JK601) on the PoE Board.
There are 2 types of PoE receiving methods; a type using unused pins (4, 5, 7 and 8 pin) for LAN data transmission and a type
using the mid point of data lines (1, 2, 3 and 6 pin). This product is compatible with both types because it is equipped with 2 lines
(DA601 and DA602) of diode bridge circuits. The outputs of the 2 diode bridges described above are connected to the
same poles and supply the subsequent circuits + and - powers.

The voltage obtained from the diode bridges is supplied to the PD control IC (IC601) of PoE.
The IC601 performs the following operations with the applied voltage from the supply side of power.
For applied 2.8 - 10 V from the supply side, it returns the internal resistance value of IC601 (25 kΩ).
For applied 15.5 - 20.5 V from the supply side, it returns the current value by the resistor connected to the Pin (11) of IC601.

(This product is resistance value (90.9) and it is designed with Class 3 specification.)
 When 48 V is applied as the certification progresses, it conducts between the Pins 7 and 9.

When the power of 48V is supplied to the following DC/DC converter section based on the PD authentication, voltage is con-
verted by control IC (IC601), output FET (Q601), switching transformer (T602), rectification diode, and capacitor (C625), which
results in output of +12V.

There is a DC jack (JK501) on the IO board, to which an AC adaptor is connected when POE is not used, and +12V is input from
the AC adaptor. Switching +12V from the PoE circuit is conducted by using diodes (D615, D506).

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• The Input terminal has two systems; both of them are connected to the Input Port of the IC101 GPIO.
• Due to Internal Pull-up Resistance, the PNP Transistor (Q503,Q504) on the following level is usually in the OFF state and the

Input Port connected to the collector is at L level.

• If the terminal is short-circuited with the GND or the signal of L level is input, the PNP Transistor goes ON and the Input Port

goes to H level.

• The CPU checks the state of this port regularly to detect a change in this signal.
• The Output terminal is controlled by the Output Port of the IC101. When the Port output is L, the transistor (Q502) on the follow-

ing level is OFF and, when the output is H, the transistor is ON. This transistor has open collector output and it controls external
equipment via external pull-up.

• The Clear Setting SW (SW102) is connected to the Input Port of the GPIO. It is usually at H level and goes to L level, when the

SW is pressed.

• The CPU monitors this Input Port periodically and, if it detects that this SW is pressed longer than a specified period, the setting

values other than the RTC are returned to factory settings.

• The LED (LED501) has two-colour LEDs (red and green). When the transistor (Q505, Q506) connected to each LED is turned

ON/OFF via the Output Port of the IC102, it controls the ON/OFF of the LED.

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The camera’s indicator lights as follows according to the status of the camera. Understanding how and when the indicator lights
can help you troubleshoot problems with the camera.

Normal Operation

Green

When power is turned on (camera is starting up)

Orange

→Flashing orange

Obtaining IP address via DHCP

Flashing green

LAN cable not connected or no LAN connection

Orange

Automatic Setup

Flashing green

→Green

Updating firmware

Flashing orange

Factory reset (by software or by pressing the FACTORY 
DEFAULT RESET button)

Flashing orange

→Off→ (The camera restarts)

UPnP

TM

 port forwarding error

Flashing orange (2-second intervals)

SD memory card is damaged, write-protected, or not
formatted properly

Red

Camera failure

Flashing red