Power Supply; In/Out 2; Amplifier; Netzteil - Grundig Cinaro 26 Service Manual

GRUNDIG Service
Hauptplatte – Netzteil / Main Board – Power Supply
+12V
3
C308
C702
0.1uF
100uF /16V
GND
C469
L323
22N
+12V
FB
C465
C436
220U %20 /25V
100N
GND
GND GND
1
D300
STP S340U
GND
IC303
NCP1117DTARK
4
TAB
3 2
IN OUT
C343 R347
0.1uF
220
R346
C349
1,8k
0.1uF
GND
GND GND
LCDVDD
L305
HH-2012- 121
C442
L333 100n
+12V
FB
R316
C509
100u/16V
47k
GND GND
C510
1u
R317
47k
C511
1u
C471
22N
+12V
L327
C467
FB
C441
220U %20 /25V
100N
GND
GND GND
2
D303
STP S340U
GND
S301
4
+3.3V_MAIN P4
3
P3
2
P2
1
+12V_MAIN P1
COND4P
For DVD and MCR
GND
IC300
+3.3V_MICOM
NCP1117DT33RK
2
+3.3V_MICOM
VCC OUT
4
TAB
C309 C433
C431
10nF
0.1uF
100uF /16V
GND GND GND GND
IC302
C437
1 8
BS SS GND
2 7 100N
VI N EN
3 6
OUT COMP
R305
4 5
GND FB
1k8 1%
R301
MP1593 10K 1% R307
15K 1%
GND GND
L332
CDRH104R
C497
22uF /10V
GND GND
1
LCD_VDD
+12V_MAIN IC307
T300 NCP1117DTARK
FDS9933A
1 8 3
S1 D1 IN
2 7
G1 D1
3 6 C710
S2 D2
4 5 0.1uF
G2 D2
R318
T301
GND
47k
BC847B
R319
SW_REG_EN
47k
1-Enable
R323
47K
GND GND
IC304
C443
1 8
BS SS GND
2 7
VI N EN
100N
3 6
OUT COMP
R311
4 5
GND FB
2k2 1%
R303
MP1593 10K 1% R313
30K 1%
GND GND
L331
CDRH104R
C503
22uF /10V
GND GND
2
L301
HH-2012- 121
+3.3V_MAIN
C310
0.1uF
GND
+3.3V_MAIN
R450
C491
SW_REG_EN
1K
1-Enable
10N
R309
C486
5K6
open C492
10N
GND GND GND
L326
3.3uH
+3.3V_MAIN
C498
22uF /10V
C505
C693
1000U16V
100n
GND GND
LOW ESR
L306
HH-2012- 121
+8V_SW_OFF
4
TAB
2 3
OUT IN
C706
C308 I
100uF
NCP1117DTARK
R654
C317
220
0.1uF
R330
C300 R655
1,2k
0.1uF 365
GND
GND GND
R320
T302
BC847B
47k R321
SW_P ANEL
47k
R324
1-Enable
47K
GND GND
R451
SW_REG_EN
1K
C494 1-Enable
10N
C444
R315
100N
7k5
C488
open
L350
GND GND GND
HH-2012- 121
L330
+5V_MCR
3.3uH
LCDVDD
C504 L302
22uF /10V
C507 C445 HH-2012- 121
220uF /16V 100n
GND GND
LOW ESR
L349
HH-2012- 121
2
IN
INTERNAL
REGULATORS
OSCILLATOR
40/385KHz
+
0.7V
-- SHUTDOWN
COMPARATOR
EN 7
LOCKOUT
COMPARATOR
--
2.3V/
2.6V
+
+
0.7V 1.22V
FREQUENCY --
FOLDBACK
COMPARATOR
5
FB
2 - 2
IC337
KF25BDT
1 3
IN OUT
TO252(D-PAK)
C311
0.1uF
C703
100uF /16V
GND GND GND
L308 IC306
HH-2012- 121
NCP1117DT18RK
TAB
3
IN OUT
C312 TO252(D-PAK)
C704
0.1uF
100uF /16V
GND
GND
+8V_SW_OF F
+5V_MAIN
4
TAB
2
OUT
C432 C318
0.1uF
220uF /16V
R656
120
C711
0.1uF
C301
GND GND GND
0.1uF
GND GND
5V
CURRENT
SENSE

AMPLIFIER

+
SLOPE
--
COMP
CLK
+ S Q
R Q
CURRENT
--
COMPARATOR
1.8V
--
MP1593
3A, 28V, 385KHz
ERROR
+
STEP-DOWN CONVERTER
AMPLIFIER
6 8
COMP SS
Chassis LM
+2.5V_MEM
L304
HH-2012- 121
+1.8V_MAIN
4
2
C315
0.1uF
GND GND
PWM_33V
L309
+5V_TUNER
HH-2012- 121
L310
+5V_VCTI
HH-2012- 121
L311
+5V_AUDIO
HH-2012- 121
S304
2mm
P
P
P
P
P
P
P
P
P
P1
P1
P1
+5V_MA
5V
1 BS
M1
3 SW
M2
4 GND