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A site where discontinualed schematic diagrams and back dated information can be found on discontinued radios tv's and any electronic equipment can be found. Newer manuals either Service and operating manuals. Radio amateurs should find this site a great source for ham radio equipment manuals. I will return to this site should I need information on any electrical equipment. priced easy to download in a PDF format and print pages need to undertake the repair.
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Quality scan of the original. All the detail necessary to troubleshoot, repair and adjust the unit. I'm sure I will be downloading more manuals in the future as the need arises.
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Exactly as described, a Service Manual complete with the schematics and PCB layout delivered in a timely manner. Many thanks for the great service.
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some of the writing is a bit blur but the part in the schmatic was great and i have fixed the machine thanks
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Well.. I'd searched for this manual and although I found many copies online I was pleased to find your website with a well balanced pricing system and easy to search and follow links. That together with the very quick response time was just what I was looking for.. being a very impatient tech.. ;-) I had the service manual in front of me within a short time.
Bookmarked.. and you can bet I will always come here first for my service & user manuals..
best regards
Ed(Tony) Foley
G7WHK
GX-201KEF2/LEF2/REF2/SEF2
SECURITY CODE (GX-201REF2)
The audio security system has been set for GX-201REF2 and GX-201RHF2. As a result of confirmation, if the code is judged to be authentic, the system goes into normal operation. However, if the code is not judged to be authentic, then the system goes into the Security mode.
� Security Function
Security is released when an agreement is found between the data from the immobilizer, which is sent from the vehicle, and the data that are set beforehand. The interrelationship in the security system is shown in the chart below.
BU ON Registration Code confirmation mode NG Non-registration
� Security Mode
The system goes into the Security mode when the Immobi code is not judged to be authentic when it is compared with the Security code registered in the audio unit. When this happens, the unit can be operated for an hour. After the elapse of an hour, the power on the unit is cut off and operation is forcefully stopped. Also, in the Non-registration mode, if an hour elapses, the system will go into the Security mode. In the Security mode, the power on the unit is cut off and operation is forcefully stopped. Note : When working on a unit to repair it, the repair would should be conducted in the one hour effective time. After the elapse of an hour, the power on the unit is cut off. If the power is put on again, another hour will be given to operate on.
Confirmation mode OK Normal operation
Non-registration mode Security mode Registration mode
Delete mode Re-Registration
� Code Confirmation Mode
This mode is for judging whether the Security code is registered or not in the audio unit. When the unit is reset, the operation will start from the Current mode. � The registration condition of the Security code can be grasped using the E2PROM. � The Security code is not registered or when abnormalities detected with E2PROM, the system will move to Non-registration mode. � When registering a Security code, the system will move to Confirmation mode. � Conditions of the audio unit during the Security mode Power off. Display light off. Keys do not work (Except the EJECT Key). Audio power off (No voice output). Switching on TV sources not possible. ( Key operation from the monitor not possible.) Voice interruption/switching from NAVI and hands-free unit not possible. In the Security mode, the display is not lighted and when there is an input from any of the key, �SECURITY� will be displayed.
� Non-Registration Mode
Thus system will move to the Non-registration mode, when the Security code is not registered for an audio unit. Even if the Security code is not resisted, operation is possible for an hour. However, there is a certain limitations placed on the operation. Using this time, production and a variation on the products will be conducted.
� Delete Mode
The system goes in the Delete mode, when the �Requesting Delete� condition of the Integrated ECU operating condition signal from the Integrated ECU is obtained by the A/C ECU via low-speed CAN into the gateway and it is sent to the audio unit via UART. The Delete mode is positioned as a Test mode and detailed input methods are not disclosed. The Security code recorded into the E2PROM in the Registration mode and Re-registration mode is cleared in the Delete mode and non-registration condition is obtained. Note : When a linked product is repaired, the security code must be deleted when the repair work is completed. For GX-201, in order to maintain the security, deletion is only effective when selection monitor is used.
� Confirmation Mode
The system will automatically go into the Confirmation mode, when the Security code is confirmed to be adjusted to in the Code confirmation mode. When the A/C ECU is obtained Through CAN from the Integrated ECU on the vehicle side, it goes into the gateway. The Immobi code sent to the audio unit by UART and the Security code registered on the audio unit is compared.
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