SERVICE MANUAL - Nexo

NXAMP4x412. Front Panel Assembly(Time required: about 20 minutes)12-1. Remove the top cover and the NX-DFLT card.(See procedure 1.)12-2. Remove the CONTROL circuit Board and the OPTangle. (See procedure 2.)12-3. Disconnect the power switch connector assembly fromthe PSANHA circuit board. (Fig. 9)12-4. Remove the PSANHA Circuit Board.(See procedure 3.)12-5. Disconnect the power switch connector assembly fromthe PSANHB circuit board. (Fig. 9)12-6. Disconnect the flat cable from the PN-AN circuit board.(Fig. 9)12-7. Remove the eight (8) screws marked [660]. The frontpanel assembly can then be removed. (Fig. 9)13. PN-AN Circuit Board(Time required: about 25 minutes)13-1. Remove the top cover and the NX-DFLT card.(See procedure 1.)13-2. Remove the front panel assembly. (See procedure 12.)13-3. Remove the five (5) screws marked [650]. The LCDassembly can then be removed. (Fig. 9)13-4. Remove the four (4) nylon rivets marked [40]. ThePN-AN circuit board and the LCD unit can then beseparated. (Fig. 9) Front panel assembly[650][660][650]LCD assemblyLCD assembly[40]LCD unit[40][660]PN-AN[40]: NYLON RIVET P3570-W/BW (--) [650]: BIND HEAD SCREW 3x4 MFZN2B3 (--) [660]: FLAT HEAD SCREW 4x8 MFZN2B3 (--) Fig. 9 33