JVC AV-21L41/BK Service Manual page 10

REPLACEMENT OF IC301 (IF V/C DECODER)
" For the IC301(IF V/C DECODER) of this model, all data are written in the micro-computer. So, write the data in the micro-
computer in accordance with the following procedures before starting adjustment.
REPLACING PROCEDURES
(1) Turn the POWER OFF.
(2) Replace the IC301 with a new one.
(3) While pressing MENU button and VOL+ button ON the FRONT Panel simultaneously, turn the POWER ON. When the POWER is turned
ON, the data is written in the micro-computer immediately.
LOCATIONS OF FRONT PANEL BUTTONS AND LAMPS
2 3
1
1 MENU buttons
2 CHANNEL ∨/∧ buttons
(MENU ∨/∧ buttons)
3 VOLUME －/＋ buttons
(MENU －/＋ buttons)
4 ECO sensor
5 REMOTE CONTROL sensor
6 ON TIMER lamp
7 POWER lamp
8 MAIN POWER button
No. 51859
6 7
4 5
AV-21L41
8
13