Hitachi CMP5000WXE CMP5000WXJ CMP5000WXU - Faults and LED blinking codes
SHUT DOWN/POWER DOWN DIAGNOSIS BY LED
DISPLAY
When internal circuit abnormality and other operation abnormality
occurred from this unit, self-diagnose display function by STANDBY/ON (LED)
indicator is loaded.
Each NG point by LED blinking and a PD (power down) point are as follows.
Each NG point by LED blinking and a PD (power down) point are as follows.
Shut down
• Operations : When a microcomputer detected abnormality, turn the
power supply to OFF.
• LED display : Green blinks
How to release the shut down state
When turn the power supply ON by remote control units, release from the shut down state, and turn the power supply ON. (It is not necessary to turn the AC power OFF.)
When turn the power supply ON by remote control units, release from the shut down state, and turn the power supply ON. (It is not necessary to turn the AC power OFF.)
Power down
• Operations : When this unit becomes the dangerous state, turn
the power supply OFF with the protection circuit.
• LED display : Red blinks
* When protection circuit more than two places almost worked simultaneously, display LED in order to 1st - 2nd.
• LED display : Red blinks
* When protection circuit more than two places almost worked simultaneously, display LED in order to 1st - 2nd.
Examples: LED blinks in the 1st power down = Y-DC/DC CONVERTER,
2nd power down = Y-DRIVE
How to release the power down state
AC power OFF = > Wait for PD LED in the power supply module disappearing (for around 30 seconds). => Afterwards, wait moreover for five seconds. => Return by AC power ON.
* After power down release, this unit rises up in the standby state.
AC power OFF = > Wait for PD LED in the power supply module disappearing (for around 30 seconds). => Afterwards, wait moreover for five seconds. => Return by AC power ON.
* After power down release, this unit rises up in the standby state.
Abbreviation (NG) => Not Good
Panel microcomputer NG
When a module microcomputer failed in communication with a panel microcomputer,
this NG occurs.
Shut down after OSD display for 30 seconds from the NG detection.
Shut down after OSD display for 30 seconds from the NG detection.
Abnormality to expect
Open / Short of communication line in the Assy
Open / Short of communication line in the Assy
DIGITAL-IIC communication NG
When a module microcomputer failed in communication with outside EEPROM
or EXPANDER, this NG occurs.
Shut down after OSD display for 30 seconds from the NG detection.
* However, this communication NG may occur in the standby state.
Shut down after OSD display for 30 seconds from the NG detection.
* However, this communication NG may occur in the standby state.
Abnormality to expect
• Open / Short of communication line in the Assy
• Breaking of wire between DIGITAL VIDEO Assy (D1) and SW POWER SUPPLY Module (P2).
• Open / Short of communication line in the Assy
• Breaking of wire between DIGITAL VIDEO Assy (D1) and SW POWER SUPPLY Module (P2).
Dew drop detection
When it becomes the dew drop state in this unit, this NG occurs.
After the dew drop detection, shut down immediately.
After the dew drop detection, shut down immediately.
Abnormality to expect for dew drop
Disconnect a connector CN2002 between Dew drop sensor and Y DRIVE Assy.
Disconnect a connector CN2002 between Dew drop sensor and Y DRIVE Assy.
Temperature abnormality
When temperature of this unit became abnormally high, this NG
occurs.
Shut down after OSD display from the NG detection for 30 seconds.
Shut down after OSD display from the NG detection for 30 seconds.
Abnormality to expect when it occurs
in the environment that is not high-temperature
• Disconnect a connector between SP TERMINA (L) Assy (SPL1) and MX AUDIO Assy (A3).
• Disconnect a connector between MX AUDIO Assy (A5) and RGB Assy (R8).
• Disconnect a connector between DIGITAL VIDEO Assy (D18) and temperature sensor 1 (TE1).
• Disconnect a connector between SP TERMINA (L) Assy (SPL1) and MX AUDIO Assy (A3).
• Disconnect a connector between MX AUDIO Assy (A5) and RGB Assy (R8).
• Disconnect a connector between DIGITAL VIDEO Assy (D18) and temperature sensor 1 (TE1).
FAN NG
When a fan does not function, this NG occurs. Shut down after OSD display for 30 seconds
from the NG detection.
* FAN NG detection functions only in case of following.
• When FAN CONTROL setting is maximum
• When sensor temperature of TEMP3 is more than 30°C with FAN CONTROL setting is AUTO. (even if connector is left when does not turn the FAN, this unit does not work.)
* FAN NG detection functions only in case of following.
• When FAN CONTROL setting is maximum
• When sensor temperature of TEMP3 is more than 30°C with FAN CONTROL setting is AUTO. (even if connector is left when does not turn the FAN, this unit does not work.)
Abnormality to expect
• Disconnect a junction connector between FAN (A6) and MX AUDIO Assy (A7).
• Disconnect a connector between MX AUDIO Assy (A5) and RGB Assy (R8).
• FAN forced stop by an alien substance involving it.
• Disconnect a junction connector between FAN (A6) and MX AUDIO Assy (A7).
• Disconnect a connector between MX AUDIO Assy (A5) and RGB Assy (R8).
• FAN forced stop by an alien substance involving it.
Module microcomputer NG
When a main microcomputer failed in communication with a module microcomputer,
this NG occurs. Shut down after OSD
display for 30 seconds from the NG detection.
* However, this communication NG may occur by the standby state.
Abnormality to expect
• Open / Short of communication line in the Assy.
• Disconnect a connector between RGB Assy (R3) and DIGITAL VIDEO Assy (D3).
• Writing defectiveness of module microcomputer (IC1207) software.
* However, this communication NG may occur by the standby state.
Abnormality to expect
• Open / Short of communication line in the Assy.
• Disconnect a connector between RGB Assy (R3) and DIGITAL VIDEO Assy (D3).
• Writing defectiveness of module microcomputer (IC1207) software.
Wide microcomputer NG
When a main microcomputer failed in communication with a wide microcomputer,
this NG occurs. Shut down after OSD
display for 30 seconds from the NG detection.
Abnormality to expect
• Open / Short of communication line in the Assy.
• Software writing defectiveness of wide microcomputer (IC5601).
• Writing defectiveness of outside Flash ROM (IC5602) on the wide microcomputer.
Abnormality to expect
• Open / Short of communication line in the Assy.
• Software writing defectiveness of wide microcomputer (IC5601).
• Writing defectiveness of outside Flash ROM (IC5602) on the wide microcomputer.
RGB-IIC communication NG
When a main microcomputer failed in IIC communication, this NG
occurs. Shut down after OSD display for
30 seconds from the NG detection.
* However, this communication NG may occur by the standby state.
Abnormality to expect
• Open / Short of communication line in the Assy.
• SLOT and the insertion of the SLOT junction PC Board are incomplete.
* However, this communication NG may occur by the standby state.
Abnormality to expect
• Open / Short of communication line in the Assy.
• SLOT and the insertion of the SLOT junction PC Board are incomplete.
There is the case that it becomes the following symptom except NG when
the SLOT insertion is incomplete.
• Audio of INPUT3 and 4 are not output.
• Do not switch from INPUT3 to 5 (SLOT function).
• Video signal of INPUT1 and 2 are not appear.
• Do not switch from INPUT3 to 5 (SLOT function).
• Video signal of INPUT1 and 2 are not appear.
Audio NG
When DC component added on the speaker output line, this NG
occurs. After the NG detection, shut
down immediately.
Abnormality to expect
• Disconnect a connector between MX AUDIO Assy (A5) and RGB Assy (R8).
• Short-circuits between + and - of C8615 and C8622.
Abnormality to expect
• Disconnect a connector between MX AUDIO Assy (A5) and RGB Assy (R8).
• Short-circuits between + and - of C8615 and C8622.
Diagnosis of the error point in the
various protection circuit (P.D. circuit) operation (Red LED blinks)
When a fuse blows
• If a fuse blows, never turn the power on again only after replacing the fuse. (In most cases, the fuse itself did not have any problem. So as long as factors of over current have not been removed, chances of destruction increase every time the power is turned on. In the worst case, about a dozen parts may be destroyed.)
• Principally, the whole power-supply module must be replaced.
• If a fuse blows, never turn the power on again only after replacing the fuse. (In most cases, the fuse itself did not have any problem. So as long as factors of over current have not been removed, chances of destruction increase every time the power is turned on. In the worst case, about a dozen parts may be destroyed.)
• Principally, the whole power-supply module must be replaced.
Voltage adjustment of the panel drive
As this model employs the electronic VR system for the VSUS and VOFS voltages, and as the voltage-adjustment data are stored in the DIGITAL assembly, voltage adjustment of the panel drive is not necessary when the power-supply modules are changed. (For VADR, VH, and VRN, adjustments with semi fixed VR controls are necessary.)
For this model, as the power-supply block has been developed and designed by an outside vendor, at the point you know which module is a cause of failure, (change the corresponding modules, and do not diagnose or repair the module.
Similarly, the switches and the semi fixed VRs inside the power supply module must not be adjusted without a special reason.
As this model employs the electronic VR system for the VSUS and VOFS voltages, and as the voltage-adjustment data are stored in the DIGITAL assembly, voltage adjustment of the panel drive is not necessary when the power-supply modules are changed. (For VADR, VH, and VRN, adjustments with semi fixed VR controls are necessary.)
For this model, as the power-supply block has been developed and designed by an outside vendor, at the point you know which module is a cause of failure, (change the corresponding modules, and do not diagnose or repair the module.
Similarly, the switches and the semi fixed VRs inside the power supply module must not be adjusted without a special reason.
