Set Block Diagram - Philips FW-C255 Service Manual

SET BLOCK DIAGRAM

+CD +12V_M
1.0 Vpp
-6dB Track
MPEG3 VDC-3C
CDC
D A M D
VIDEO OUT
CONTROL
# FOR VCD/MP3 VERSION
+CD +12V_M
-6dB Track
3CDC-L2C
250mV
CDC
M D
CONTROL
AUX / CDR
500mV / 1000mV
ATTN.
-8.5dB
120mV
A
-CMOS +12V_M +12V_A
25mV 500mV
ECO-MTF ATTN.
250nWb/m
-26 dB
TAPE
M A
CONTROL
+5V6_ECO SIMPLE KARAOKE
+LPS
+5V6
MIC DET
ECO POWER 4 X DSC LEDS
LED
CD_ON
AMP_ON
NTC
POWER
PWDN
CONTROL
LPC
D
RDS
DECODER
uP
TUNER TMP87CS71F
CONTROL
CDC
D
CONTROL
EEPROM
TAPE
CONTROL
+F
KEY SCAN
MATRIX
MIC DET
+5V6
HP DET
HP DET
MUTE
HP_MUTE
33R
HEADPHONE
47R
A
HP_OUT
4-1
+12V_A
250mV
125mV
FM (67.5 kHz)
ECO6 AM (80% MOD)
TUNER
A
CONTROL
100mV
14 dB
SOFTWARE CONTROL
SOURCE SELECTOR
I2C
I2C DATA I2C CLK
+12V_A
3.5mV
SWITCH
A A
+LPS
I2C DATA I2C CLK
+F
ECO/SLEEP
POWER
SWITCH
+5V6
-33V
+5V6_ECO
+LPS
IR EYE
F1x
FTD F2x
JOG
VOLUME
CONTROL
+F
CONTROL
SA IN +F
F1x
F1
F2x
F2
650mV
78dBA
3.2dB
FRONT
SA BUFFER -33V
500mV
+12V_A
76dBA
16dB
CD_ON
A
+9.1V
+9.1V
TDA7468
INCREDIBLE
TREBLE
LEFT/RIGHT
VOL. 1 & VOL. 2
SURROUND
BASS
INTERFACE
500mV +5V6
A D
SIMPLE
IS FILTER
MUTE
MUTE
+5V6 +C
POWER SUPPLY
FUSE
+12A
REGULATOR
+Z
(ETF7 ONLY)
7812
+Z
+12M
FOR CLASS G SWITCH
AMP_ON
+50V
-33V
PWDN
F1
F2
# VCD
# VCD
REGULATOR
+CD
L7805
(+5V)
-33V CD_ON
4-1
NOTE :
-CMOS (-9V) MAIN SIGNAL PATH
-CMOS
REG
MEASUREMENTS ARE IN AUX MODE :
+12V_A
XX mV LEVELS AT MAX VOL
YY dB\A S/N AT 500mW\
ZZ dB HEADROOM (1% THD) WRT TO LEVEL AT MAX VOL
CD SUPPLY
CONTROL +CD (+5V)
(FOR CDC-L2C ONLY)
# PROVISION FOR VCD/MP3 VERSION
+9V
+12V_A
REG
500mV
HEADPHONE
76dBA
AMPLIFIER
16dB
2.50V
85dBA
+12V_A
3dB
1K 1.90V
67dBA
NJM4556AM
HP_OUT 1K 3.0dB
ATTEN.
Rin = 3k
LEFT/RIGHT
D D
FUSE
FUSE
+C
FUSE
NTC
FUSE
# VCD
# VCD
# FOR VCD/MP3 VERSION
+5V6_ECO
+C +Z AMP_ON
POWER
AMPLIFIER
AN17830A
+
-
L/R SPEAKER
2 X 37W
2 X 6 OHMS
+
-
## FOR MATRIX
SURROUND
COMBI 0.9W/6 ohms
## FEATURE PROVISION
TRAFO
L
MAINS
FOR -/21 ONLY
CHOKE
N
VOLTAGE
(NOT USED FOR -/37)
SELECTOR
10M
(ONLY FOR -/37)
+C
STBY TRANSFORMER
(NOT USED IN -/21 & -/37)
LPC
LPS
SMPS
FW-C255 Block diagram ...34280 dd wk148