Philips AS660C/41 - Page 64

W-4
POWER BOARD
RECTIFIERS REGULATORS
FULL WAVE UR
BRIDGE nee
D5SBAZ0
>
POWER AMP
FULL WAVE +5V REG sv AN7164
BRIDGE FOR VCD > URSPK
1N5392 80437 UTE
Le
>
+12MREG = |11.2V
Z 80437
g FULL WAVE T
L 3 12AREG = |11.8V aN
Es CENTRE-TAP +
1N5392 8D438 »
> sTD_BY
+5V6REG | 5.6V
L7805cV
FULL WAVE
CENTRE-TAP POWER DN >
1N4148 DETECT LINE
>
a HALF WAVE 32V sage
FOR 1n4002 FOR FID
FID om 80238
WARNING
:
If
the
power
amplifier
heatsink
is
not
attached
to
the
power
amplifier
during
testing,
do
not
make
the
amplifier
deliver
more
than
500mW.
per
channel.
It
is
advisable
to
inject
signal
one
channel
at
a
time
whenever
‘possible
and
to
remove
all
input
signal
immediately
after
test.
CONNECTOR 12 TO 1210
11-1
of 1 PA AC input to power amplifier rectifier
of 2) PA AC input to power amplifier rectifier /Note:Pin7 is shorted to Pin 2]
of 3) PA AC input to power amplifier rectifier
o] 4 PA AC input to power amplifier rectifier (Note:Pin 3 is shorted to Pin 4]
of 5 +12V/+5V6 AC input to +12V & +5V6 rectifier
0] 6 = =GND Centre-tap of secondary winding of Pin 5 ,7 and 8
0} 7 +12V/+5V6 AC input to +12V & +5V6 rectifier
of 8 -35V AC input to FTD rectifier
of 9 FTD FTD filament voltage
of10 FTD FTD filament voltage
CONNECTOR 1222 ETD SUPPLY AND uP CONTROL SIGNALS
lo} 1 STDBY Standby signal from microprocessor
lof 200 ~ FT AC voltage for FTD filament
jo] 3. ~F2 AC voltage for FTD filament
lo} 4 -32V -32.4V voltage for FTD grid
jo] 5. = PWD DN Power down signal to microprocessor
CONNECTOR 1223 AE SIGNAL AND SUPPLY.
Ol. ak. Left input for power amplifier
o}2 a AF ground
of 3 RR Right input for power amplifier
co}
4
AMP_ON
Control
from
up
to
switch
power
amplifier
and
VCD
regulator
to
standby
ofS
+12M
+12V
for
tapedeck
motors
and
CD
mechanisms
o}6 |B Ground for +12A
Oo] 7 -+12A +12V for analog circuitries
of 8 D Motor and Digital ground
jo} 9 +5V6 +5V6 for set uP and VCD uP
CONNECTOR 1224
AE SIGNAL AND SUPPLY {OPTION}
{Connections as 1223 but with digital ground and motor ground seperated]
Left input for power amplifier
AF ground
Right input for power amplifier
Control from uP to switch power amplifier and VCD regulator to standby
+12V for analog circuitries
Ground for +12A
+12V for tapedeck motors and CD mechanisms
Motor ground
+5V6 for set up and VCD up
Digital ground
VCD SUPPLY {OPTION}
oO} 1 L
oO} 2 w?
o3 R
lo} 4.» AMP_ON
jo} 5 + 12A
jo} 6 B
oO} 7 +12M
‘of 8 M
oO} 9 +5V6
0} 10 1?
CONNECTOR 1237
o}1 = +VCD
of} 2. +VCD
of 3 +Vst
o} 4 GND
of 5 GND
o}6 +VA
CONNECTOR 13 TO 1231
oj 1) «VCD
o} 2 vcd
+5V for VCD module
+5V for VCD module
+5V for VCD uP-SRAM
Ground
Ground
+12V for VCD servo drivers
[OPTION]
AC input to VCD rectifier
AC input to VCD rectifier
PCS 89 352