31460230 Volvo.Penta Cylinder head

Illustration 1 g00593349
Display Area Of Generator Set Control (GSC) (1) Dedicated Shutdown Indicators. (2) Fault Shutdown Indicators. (3) Fault Alarm Indicator. (4) Upper Display. (5) Lower Display. (6) Keypad.Service Mode is used for the following purposes.
Assist with the troubleshooting of diagnostic codes.
Satisfy special applications.
Satisfy customer needs.
Verify generator set functions.
Calibrate or adjust generator set functions.Service mode has ten options that can be selected. Service personnel use the option to obtain information about the generator set, and the operator can program functions of the generator set.
Table 1
OP1     Fault log viewing    
OP2     Setpoint viewing    
OP3     Password entry    
OP4     Fault log clearing    
OP5     Setpoint programming    
OP6     Spare Input/Output programming    
OP7     Hourmeter programming    
OP8     Voltmeter/Ammeter programming    
OP9     Engine setpoint verification    
OP10     AC offset adjustment    The keypad and the display of the GSC are used for activating service mode and selecting the desired option. In service mode, the keys on the keypad have different functions, and the keys on the keypad have different names. The preceding illustration shows the name of each key in service mode. Also, there is a film (label) on the vandal door of the control panel that identifies each key. The service functions of the keys are listed below.Scroll Right Key - This key is used to view information by scrolling. When you are entering the password this key represents the number 1. "Scroll Up" Key - This key is used to scroll up through information or this key is used to increase the value of information. When you are entering the password this key represents the number 2."Scroll Down" Key - This key is used to scroll down through information or this key is used to decrease the value of information. When you are entering the password this key represents the number 3.Note: In order to rapidly scroll through a large range of information, hold down the appropriate scroll key."Select" Key - To view an option, use the "Select" Key. To change an option, use the "Select" Key. To start the scrolling of information, use the "Select" Key."Enter" Key - This key is used to enter information that has been changed into the memory of the GSC. "Exit" Key - This key is used to exit service mode. Then, the display will go to normal mode. The "SERV" indicator on the upper display is NOT SHOWING when the GSC is NOT in service mode. "Service Mode" Key - This key is used to enter service mode. The "SERV" indicator on the upper display FLASHES when the GSC is in service mode. The "SERV" indicator on the upper display FLASHES when the keypad performs the functions of the service mode.Procedure To Enter Service ModeNote: Any active shutdown fault must be made inactive in order to access service mode. A FLASHING shutdown indicator means that a shutdown fault exists. To temporarily change a shutdown fault from an active shutdown fault to an inactive shutdown fault, turn the ECS to the OFF/RESET position. To permanently change a shutdown fault from an active shutdown fault to an inactive shutdown fault, the fault must not be occurring. Also, the ECS must be turned to the OFF/RESET position. If the jumper from terminal 6 to terminal 9 is not installed on the ECS, then the GSC will not power up in OFF/RESET and any active shutdown fault must be corrected before entering service mode.Note: Service mode cannot be entered when the ECS is in the AUTO position.
Press the "Service Mode" key on the keypad of the GSC. The "SERV" indicator on the upper display FLASHES whenever the GSC is in service mode.
The desired option (OP1 through OP10) can now be selected. Each option is described in the topics that follow.
To return to normal mode, press the "EXIT" key a few times until the "SERV" indicator is not showing.Note: To enter OP4 through OP8, the engine must be shut down. Turn the ECS to the STOP position.OP4 through OP10 are protected by a password in order to reduce the possibility of altering information by mistake. The password is entered in OP3. The password must be correctly entered before access is gained to OP4 through OP10. See Systems Operation, "Password Entry OP3". Options OP1 and OP2 are for the viewing of information. These options are not password protected.