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97

Errors related to the system occurred. 
(Check the clock)

Checks on the area surrounding VCXO
CL1822(CLK33) -CL13002(GND_1)

Referring to the circuit diagram, check 
how far the clock signals can be 
measured with an oscilloscope.

33.316334MHz-33.349667MHz
CL1822

Points to be measured

Waveform diagram 
Frequency/Points to be measured

[Parts to be checked]
L1821,IC1803,X1821,C1821,C1822,R1821,
X1822,C1823,C1824,R1822,R1824,R1814,
R1825,R1826,R1828,R1829,R1830,R1831,
R1832,R1833,R1823,L1822,IC1804,R1883,
R1884,R1885,R1886

[Parts to be checked]
L1821,IC1803,X1821,C1821,C1822,R1821,
X1822,C1823,C1824,R1822,R1824,R1814,
R1825,R1826,R1828,R1829,R1830,R1831,
R1832,R1833,R1823,L1822,IC1804,R1883,
R1884,R1885,R1886

Errors related to the HDMI emission occurred. 
(Check the clock)

Check on the area surrounding VCXO
TP703(CEC_CLK) - CL13003(GND_2)

Referring to the circuit diagram, check 
how far the clock signals can be 
measured with an oscilloscope.

24.563712MHz-24.588288MHz
TP703

Points to be measured

Waveform diagram 
Frequency/Points to be measured

Check on the area surrounding VCXO
HDTX_MCK(36MHz)

Referring to the circuit diagram, check 
how far the clock signals can be 
measured with an oscilloscope.

36.845568MHz-36.882432MHz

[Parts to be checked]
L1821,IC1803,IC1804,X1821,C1821,C1822,
R1821,X1822,C1823,C1824,R1822,R1824,
R1814,R1825,R1826,R1828,R1829,R1830,
R1831,R1832,R1833,R1823,L1822,IC1804,
R1883,R1884,R1885,R1886

Errors related to the LAN controller occurred. 
(Check the clock)

Check on the area surrounding VCXO
TP1001(CK25M_LAN)
- CL13003(GND_2)

Referring to the circuit diagram, check 
how far the clock signals can be 
measured with an oscilloscope.

24.987500MHz-25.012500MHz
TP1001

Points to be measured

Waveform diagram 
Frequency/Points to be measured

[Parts to be checked]
L1821,IC1803,X1821,C1821,C1822,R1821,
X1822,C1823,C1824,R1822,R1824,R1814,
R1825,R1826,R1828,R1829,R1830,R1831,
R1832,R1833,R1823,L1822,IC1804,R1883,
R1884,R1885,R1886

Errors related to the clock occurred. 
(Check the clock)

RTC clock
Before the measurement, connect
CL1275(CLKC) and CL1273(RTCV).
CL1271(32KOUT) -CL13005(GND_4)
After the measurement, disconnect 
CL1275 and CL1273.

Referring to the circuit diagram, check 
how far the clock signals can be 
measured with an oscilloscope.

32.767443kHz-32.768754kHz
CL1271

Points to be measured

Waveform diagram 
Frequency/Points to be measured

[Parts to be checked]
X1271,C1274,C1275,IC1207

98

1) Make sure the required devices are ready, and then, connect them.
2) Set up the PC.

2-1) Using a serial cable, connect the HDcom to be checked to the PC.
2-2) Start the communication software (HyperTerm for Windows).

2-3) Configure the serial port settings.

Port: COM* (Serial port connected to the HDcom)
Baud rate : 38400
Data: 8 bit
Parity: none
Stop: 1 bit
Flow control: none

3) Set the rotary SW (S1502) on the main board to [1].
     [0] is selected by default operation mode.
4) Turn on the HDcom.
5) Confirm that a prompt appears on the console.

>

6) On the console, enter the password for maintenance mode.

>DIAGNOSIS#2011

7) Confirm that an OK response appears.

>OK

8) The system is in the Maintenance mode. Perform required checks.

1) Turn off the man unit.
2) Set the rotary SW (S1502) on the main board to [0].

Do not skip this procedure. It is necessary to recover the operation mode.

For  diagnosis
[DIAGNOSIS_VC600], [DIAGNOSIS_VC300] Connection Diagram

A -MIC

IC201

Main

Sub-A

Sub-B

FAN

Power SW

PC

D-MIC

Camera

Monitor

Either  of  A-MIC or D-MIC is connected.

Minimum block diagram when is DAIAGNOSIS executed. 

99

For Connection Test
[CHK_ETHER], [GET_MAC] Connection Diagram

For USB Test
[CHK_USB], [TEST_USBMEMORY], [TEST_USBVBIS ] Connection Diagram

IC201

Main

Sub-A

Sub

Sub-C

-B

FAN

Power SW

PC

Hub

IC201

Main

Sub-A

Sub

Sub-C

-B

FAN

Power SW

PC

USB 2.0 High Speed Memory

100

For Audio Test
Audio part Connection Diagram
     No.1

     No.2

A -MIC

IC201

Main

Sub-A

Sub-B

FAN

Power SW

PC

D-MIC

Camera

Monitor

Hub

Camera

Monitor

A -MIC

IC201

Main

Sub-A

Sub

Sub-C

-B

FAN

Power SW

PC

Camera

Monitor

Hub

Camera

Monitor

A -MIC