Philips HTS5510C/75, Service Manual

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EN 10 HTS5510C/75/98
3. Diagnostic Software
Service test program
To start service test program
hold open/close and
buttons depressed while
plugging in the mains cord
Display shows
“SERVICE”
followed by ROM version
“S-Vxx-yy”
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)
Hold open/close and buttons depressed till the Display shown “S-Vxx-yy”
TEST Activated with ACTION
EEPROM FORMAT
TEST DISC 1 Load default data. Display shows “NEW”.
Caution!
All presets from the customer will be
lost!!
ROTARY
ENCODER TEST Volume
Knob
Display shows value for 2 seconds.
Volume values increases or decreases in
steps of 1 until 0 (VOL MIN) or 40 (VOL
MAX) is reached.
LEAVE SERVICE
TEST PROGRAM Disconnect
mains cord
Main Menu
Key
“Display Test”
triggered?
Display Test
n
Activate and display
“Pattern1”
y
Display Test
Following display patterns are used to test the display and its
connections to
μ P.
Pattern 1:
All display control pins are ON
All LEDs are ON.
- to check for open-circuits
Pattern 2:
Alternate display control pins are ON (Test Pattern: 0x55)
The following LEDs are ON:
DiscAvailable1
DiscAvailable3
DiscAvailable5
DiscActive2
DiscActive4
- to check for short-circuits
(tbd)
Key
“Display Test”
triggered?
n
y
Activate and display
“Pattern2”
Key
“ ”
triggered?
n
y
Key
“ ”
triggered?
y
n
3. Diagnostic Software