Service Menu - Sanyo CE28FN1-E Service Manual

The microprocessor detects the headphones presence via the HP_SW signal. The MUTE signal also affects
the headphones audio.
The FM or NICAM-modulated sound IF signal, which inputs the audio processor, is produced by the sound IF
circuit, IC1350. This IC takes the signal from the tuner and converts it to the intercarrier frequency. The internal
VCO frequency is adjusted by means of L1351.

15. Service menu

The service menu is accessed by holding down the front key "VOL-" and simultaneously pressing the teletext
green key from the remote control. The service menu is a two level structure as shown in the diagram below.
The active keys (local or remote) in service mode are: VOL-, VOL+, P-, P+, MENU and the digits. The
navigation through this menu works the same than in the user menu.
* The P+ and P- keys allow to navigate through the options in the active menu.
* The VOL+ key opens the second level menu if available. If there is a highlighted adjustment, the VOL- and
VOL+ keys allow to change it.
* The MENU key goes back one level menu. If the active menu is the main one, it exits the service mode.
* The digit keys allow direct entry for adjustments.
* The SERVICE mode is exited by pressing any other key.
GEOMET VIF
HOR SHIFT PLL
EW AMPLIT PLL L'
PARABOLA AGC
CORNER PAR
TRAPEZIUM
VERT SLOPE
VERT AMPL
S-CORREC
VERT SHIFT
WHITE G2
GREEN BRI
BLUE ADJ
AKB
K-DRV
SERVICE
MORE CONFIG STANDARD
Y/C PAL FFI
Y/C SECAM SCS
Y/C NTSC CMB
Y/C AV TXEAST
PBL SPEED DSA
CONTR OSD OSO
CONTR TXT OEM
CENTR TXT 16:9
SEMI MUTE
INI NVM
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Service Manual MS CE25FN1-E
V-STAT S-STAT
PAL BG
PAL DK
PAL I
SECAM BG
SECAM DK
SECAM L
NTSC BG
NTSC M
I2C BUS