Service Test Program - Philips HTS6600 Service Manual

5.

Service Test Program

To start Service Test Program,
power up the set, open the tray
with remote control or front
panel key and press 2,5,8 on the
remote control. The tray will close
by itself and the set will display
"S-Vxx-yy".
Display shows
"SERVICE"
followed by ROM version
"S-Vxx-yy"
Main Menu
Display Test
key
"DisplayTest"
triggered?
y
Activate and display
"Pattern1"
key
"DisplayTest"
triggered?
y
Activate and display
"Pattern2"
key
" "
triggered?
y
Service Test Program
S refers to Service Mode
V refers to Version
xx refers to Software version number of BEA
(counting up from 01 to 99)
yy refers to Software version number of Front uP
(counting up from 01 to 99)
5.1 Display Test
Purpose:
This test is used to check the driving circuits, the display and whether there are
any short-circuits, open-circuits or any other defects.
Display test key =
Player:
Following display patterns are used to test the display and its connections to μP.
Pattern 1: Default: All display control pins are ON. All LEDs are ON
- to check the open-circuits
n
Pattern 2: Alternate display control pins are on (Test Pattern: 0x55)
- to check the short-circuits on Data port
n
n
3139 785 32530 5. EN 25