DEH-80PRS/XNUC
5
5
6
7
8
5
6
7
8
C
D
F
A
B
E
1. SERVICE PRECAUTIONS
1.1 SERVICE PRECAUTIONS
1. You should conform to the regulations governing the product (safety, radio and noise, and other
regulations), and should keep the safety during servicing by following the safety instructions
described in this manual.
2. Before disassembling the unit, be sure to turn off the power. Unplugging and plugging the connectors
during power-on mode may damage the ICs inside the unit.
3. To protect the pickup unit from electrostatic discharge during servicing, take an appropriate treatment
(shorting-solder) by referring to "the DISASSEMBLY".
4. After replacing the pickup unit, be sure to check the grating.
5. Be careful in handling ICs. Some ICs such as MOS type are so fragile that they can be damaged by
electrostatic
induction.
6. area and a heat sink becomes hot areas. Be careful not to burn yourself.
7. The RESET button is at the back of the Detach Grille.
Note that the audio settings cannot be deleted by a hard reset.
Reset the audio settings from the initial setting menu.
8. Be careful not to damage the Knob for the Slide Switches (S351, S601) at the bottom of the Tuner Amp Unit while
handling it or attaching the Bottom Plate.
9. The part listed below is difficult to replace as a discrete component part.
When the part listed in the table is defective, replace whole Assy.
10. RGB LED's (D1831 - D1864) are used for the illumination of the Keyboard Unit. To avoid the color heterogeneity, replace
the whole of the Keyboard Unit, even if only one of RGB LED's was defective.
TUNER AMP UNIT
IC851
LT1912EMSE
Heat pad