Philips 14PV101, Service Manual

Page: 27 / 87

1-7-12
Power Supply Block Diagram
T6450BLP
6 4 2 1
14 13 11 10
9 8
LINE FILTER
BRIDGE RECTIFIER
T601
IC601
ERROR VOLTAGE DET
F601 T4A/250V
L601
D601 - D604
SWITCHING
Q604
VR601
CN601
Q602
+B ADJ.
FEED BACK
LIMITER
Q603
PS602
4
1
3
2
H
OT
C
OL
D
Q608
M
A
IN
CBA
NOTE : The voltage for parts in hot circuit is measured using hot GND as a common terminal.
CAU
TIO
N
!
Fixed voltage power supply circuit is used in this unit. If Main Fuse (F601) is blown, check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply. Otherwise it may cause some components in the power supply circuit to fail.
TIMER+5V
P-DOWN-L (TO PIN85 OF IC201)
P-ON-ON
AL+9V P-ON+8V AL+12V(2) AL+12V(1) AL+5V
+5.7V REG.
IC301
39
55
+B DEF+B
POWER
SW601
+5V REG.
Q606
Q605
+8V REG.
Q607
AL+5V P-ON+8V P-ON-L P-DOWN-L
12
5 4 6
AL+12V(1)
3 AL+12V(2)
7 AL+9V
8 AL+33V
11
12
5 4 6 3 7 8
11
TO CRT/H.V. BLOCK
TP503
+B
TP504
GND
CN602
12
JUNC
TIO
N
-A
CBA
H
.V
./POWE
R
S
U
PPL
Y
CBA
CL603B
CN603
P-ON-H (TO PIN67 OF IC201)
+5V REG. +5V REG. +5V REG.
IC681
Q684
Q686
P-ON+5V(1) P-ON+5V(3) P-ON+5V(2)
AL+33V
CL603A
12
5 4 6 3 7 8
11
12
5 4 6 3 7 8
11
CAU
TIO
N
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE T4A/250V FUSE.
Q682
Q206
CL604
TOP COVER
TO DEGAUSSING COIL
TO AC-CORD
CM+12V/+20.5V
C-POWER-SW (TO PIN66 OF IC201)
Q681
Q683
AL+20.5V
2
2
22
G,
J,
M
G,
J,
M
C
o
m
p
ar
is
on
C
h
ar
t
o
f
M
od
el
s
&
M
ar
ks
M
od
el
M
ar
k
14PV135/01 14PV235/01
14PV385/39
H
K
J
M
od
el
M
ar
k
14PV135/07 14PV235/07 14PV385/07
E
F
G
I
14PV385/01 14PV135/58 14PV235/58
L
M
N
OTE FO
R
WI
R
E
C
O
NN
E
C
TO
R
S
:
1. PREFIX SYMBOL "CN" MEANS CONNECTOR. (CAN DISCONNECT AND RECONNECT.) 2. PREFIX SYMBOL "CL" MEANS WIRE-SOLDER HOLES OF THE PCB. (WIRE IS SOLDERED DIRECTLY.)
TEST POINT INFORMATION
:INDICATES A TEST POINT WITH A JUMPER WIRE ACROSS A HOLE IN THE PCB. :USED TO INDICATE A TEST POINT WITH A COMPONENT LEAD ON FOIL SIDE. :USED TO INDICATE A TEST POINT WITH NO TEST PIN. :USED TO INDICATE A TEST POINT WITH A TEST PIN.
" " = SMD