Circuit Operation
Ignition Positions
| | The radio receives battery voltage at all times on the circuit 640
through the Fuse 10 in order to keep the clock and the preset station
memory alive. |
| | Voltage is applied to the circuit 43 through the Fuse 38
in order to enable the radio operation. The radio is grounded through the
circuit 351. |
| | The vacuum florescent display illuminates in order to display the time
or the radio frequency setting. |
| - | The radio illumination is controlled by the instrument panel lamp
dimmer. |
| - | The PARK or HEAD headlamp positions: |
| - | Voltage is applied through the dimmer control and circuit 230
to the radio panel lamp and the internal circuitry. Voltage is applied through
circuit 308 to the radio, which signals the fluorescent display to
a level determined by the voltage in the circuit 230. |
Compact Disc and Cassette Player
The compact disc (CD) or cassette player is part of the radio unit,
if equipped. When operating, the same power required by the radio is necessary
for the tape or CD player operation.
Special Equipment Option (SEO)
Vacuum Florescent (VF) Dimming
The Vacuum Fluorescent (VF) displays of the digital speedometer and
the radio can be either step dimmed to a night mode by the VF dim displays
signals from the headlamp switch (CKT 230) or shut off by the SEO
accessory switch (CKT 308). The SEO switch panel diode serves to
prevent backfeeding from circuit 308/328 to circuit 39 if
the SEO accessory switch and the headlamp switch are both on with the ignition
in the OFF position.
