Yamaha RX-Z11 Service Manual page 33

G Operation Procedures
1. Turn off the power of this unit and disconnect the
power cable from the AC outlet.
2. Remove 6 screws (1), 2 screws (2) and then re-
move the top cover. (Fig. 1)
3. Set the switch (SW301) of RS232C conversion
adapter to the "FLASH UCOM" side. (Fig. 1)
4. Connect the writing port of this unit to the serial
port (RS232C) of the PC with RS232C cross
cable, RS232C conversion adapter and flexible
flat cable as shown below. (Fig. 1)
PC
Serial port (RS232C) /
1
1
RS232C conversion adapter /
RS232C cross cable /
FLASH
UCOM
Fig. 1
1 2
2
Top cover
Writing port /
(SUBCPU P.C.B.: CB84)
Flexible flat cable (9P) /
SW301
OTHER
RX-Z11/DSP-Z11
33