PRO-1010HD
134
1
2
3
4
1
2
3
4
C
D
F
A
B
E
Symptoms
Defective Assy
Abnormal Summary
Point to be Checked
Possible Defective Part
Remarks
No power (LED unlit)
Disconnection of cable
CN7404
Check if the connection between the POWER SUPPLY and RGB
assemblies is properly made.
POWER SUPPLY
STB 3.3 V not started
CN7404(AV1)-11 pin
AV I/O
Defective IF microcomputer
IF Ucom Block
IC8702
Check if the oscillation is normal (X8701 = 32 kHz, X8702 = 9.8 MHz)
and if RESET is set to H (IC8703).
No power (The LED remains lit in
red and does not light in green.)
RGB
Defective main microcomputer
Main Ucom Block
IC7207
If communication with the main microcomputer fails approx. 20 seconds
after the AC power is on, the main microcomputer may be defective.
Key input not effective
No power (The LED remains lit in
red and dgreen.)
Disconnection of cable
Detect Trap switch
Defective Trap switch
ASG1089
CN4801 - CN9002
CN9001 - CN8702
Check if the cables are not connected or securely connected.
Remote control unit not effective
Disconnection of cable
CN4901 - CN8901
CN7204
Check if the cable is not connected or securely connected.
Check if the unit operates normally when the TRAP switch is canceled.
See "7.1.8 How to cancel the TRAP switch."
Check if the TRAP switch is secured in its position correctly.
See "7.1.8 How to cancel the TRAP switch."
IR RECEIVE
Defective IR receiver section
IR
U4901
Check if a pulse is output when the key corresponding to Pin 3 of the
CN4901 is pressed.
Abnormal screen (Data of every
other dot are abnormal)
Abnormality in a one-eighth area of
the screen
DIGITAL VIDEO
Defective IC4
IC4 Block
IC5401
Check if an abnormal area in the screen changes when the FPC
connected to the address corresponding to the abnormal area is
replaced with the one corresponding to the next address.
ADDRESS
Check that an abnormal area in the screen does not change when the
FPC connected to the address corresponding to the abnormal area is
replaced with the one corresponding to the next address.
Defective 114-pin FPC
CN7101 - CN5001
ADY1081
Check if the FPC is broken or not securely connected.
SD Circuit in Operation
Defective Assy
Reason for Shutdown
Point to be Checked
Possible Defective Part
Remarks
9
Communication failure in
main microcomputer
RGB
Communication failure in main microcomputer or
defective peripheral circuits
Main Ucom Block
IC7207
Check short / open of communication line
(TXD_IF/RXD_IF/CLK_IF/BUSY_IF/CE_IF/REQ_IF)
RGB
Failure in writing in the main microcomputer
Main Ucom Block
IC7207
10
Fan failure
FAN
Failure in the fan motor or fan stopped by attached
dust
RGB
Disconnection of cable
Relay part between CN7402
(R8) and the wire from the fan
Check if the cable is disconnected or not securely connected.
11
Unit having higher
temperature
Use under high temperature
Surrounding/internal
temperature
Temperature detected by a sensor must not exceed 65
°
C (TEMP3) /95
°
C
(TEMP2)
AUDIO AMP
Disconnection of cable
CN5003(AP3) - CN9702(SP1)
Check if the cable is disconnected or not securely connected.
14
Communication failure in IF
EEPROM
AV I/O
Communication failure in EEPROM or defective
peripheral circuits
I/F Ucom Block
IC8705
Check short / open of E2P_SCL/E2P_SDA
15
Other failures
RGB
Defective circuits in the 12V system
Check for shortcircuits in the 12V system.
AV I/O
Defective circuits in the 3.3V system of HDMI 2.
Check for shortcircuits in the 3.3V system of HDMI 2.
RGB
Defective circuits in the 13.5V and 6.5V systems.
Check for shortcircuits in the 13.5V and 6.5V systems.
AV I/O
VCC-D1
VCC-D4
VCC-D2
VCC-D3
Defective circuits in the 3.3V system of HDMI 1.
Check for shortcircuits in the 3.3V system of HDMI 1.
•
Diagnosis of abnormalities other than shutdown and power-down
