Div Dc 500Us / Div - Philips L01H.1A Service Manual

Large Signal Panel: Audio Amplifier
1 2
AUDIO_AMPLIFIER
A
I901
MainAux_FB
B
VlotAux+5V
F901
Main_OutL
A8-45
A9-45 0271
A11-45
C
FOR ITV ONLY
Main_OutR F903
A9-46
A11-46
ITEM PIP Interface
3172 68K
D
Tilt 3172
A15-74
68K
Treble_Buzzer_Hosp-app
A7-6
Volume|Mute
A7-15
E
Main_OutL
A8-45
F
MONO|AM_MONO_SOUND
A5-43
FOR COMPAIR ONLY
F910
SDA
A7-14
G
SCL F911
A7-13
1 2
Schematics and PWB's L01H.1A
3 4 5
*
9903
6903
*
I909
3908
2R2
3901
9904 *
2911
1K
FOR ITV ONLY
*
0275
4902
3903 I903 2904
F902
4901
*
470n
*
1
2
2910
3
*
4
4904
I905 2906
F904 3905
4903
* *
*
Tilt Rotation 29RF-CH/32WS-EU
6K8
FOR ITV ONLY
3922
3921 I907 330K
330K 3923
330K
+8V
Mono 1W Stereo 5W
ITEM
I948 (LATAM/AP)
2946
* 7943
2901 RES RES
BC847B
2902 470uF 1000uF
1u
2906 --- 470nF
I949 2907 --- 1nF
2910 --- 3n3
2911 --- 3n3
3903 18K 3K3
3904 8K2 10K
3905 --- 3K3
3906 --- 10K
0267
3907 8K2 8K2
1 4905 x ---
6901 Jumper Jumper
2
6903 1N5062 ---
x
7901 ---
I911
3 7902 x ---
9903 --- Jumper
3 4 5
7. 30
6 7
*
I902 6901
*
*
*
7901 AudioSupplyGnd_FB
AN7522N 5 1
2
I904
1V4 6 CH1-IN
CH1+
4
CH1-
1V4 8 CH2-IN
CH2- 10
0V3 9 VOL
CH2+ 12
I906
3 7 11
*
AudioSupplyGnd_FB
AudioSupplyGnd_FB
*
7902
AN7523N 5 1
STB VCC
2
6 CH1-IN
CH1+
I908
9 VOL 4
CH1-
*
GNDINP NC GNDCH1
7 8 3
AudioSupplyGnd_FB
AudioSupplyGnd_FB
ITEM Mono HP Mono no HP Stereo HP Stereo no HP
9901 --- Jumper --- Jumper
9902 --- --- --- Jumper
7901 --- AN7522N
7902 AN7523N ---
A1 A2 A3
1V / div DC 1V / div DC 1V / div DC
500us / div 500us / div 500us / div
6 7
8 9 10
A1
5V2
0246
F906
A2
AmpOutL_Neg
5
F905
5V2 9901
* AmpOutL_Pos
4
F909
A3
3
F908
5V2 * 9902
AmpOutR_Pos
2
F907
A4
AmpOutR_Neg
1
I910
5V2
0281
AudioSupplyGnd_FB
I912 4
3
2
1
0280
4
3
2
1
A4
1V / div DC
500us / div
8 9 10
11
0246 C10
0267 G3
0271 C3
0275 B5
0280 E10
0281 D10
A
2901 B7
2902 B8
2903 B6
2904 C5
2905 C5
AmpOutR+ 2906 D5
2907 D5
A12-70
2908 E5
AmpOutL+
2910 C4
A12-71
2911 B4
AmpOutR_Pos 2946 F3
B 2947 D9
A12-72
2948 D9
AmpOutL_Pos
2949 D10
A12-73
2950 D10
3172 D3
3901 B5
3902 B5
3903 C4
3904 C4
3905 D4
3906 D4
3907 E5
TO 0254
C
3908 B4
OF
3921 D3
3922 D4
3923 E4
3948 F4
3949 G4
3950 F4
3951 G4
4901 C3
4902 C4
4903 D3
4904 C4
D
4905 F3
TO
4921 B5
VOICE
6901 B6
CONTROL
6903 B4
7901 B7
7902 D7
7943 F4
9901 C9
9902 C9
9903 B4
9904 B4
E F901 C3
F902 C4
F903 D3
F904 D4
F905 C10
SPEAKERS
F906 C10
2 X 5W 16 Ohm
2 X 3W 8 Ohm F907 C10
2 X 1W 8 Ohm
F908 C10
F909 C10
F910 G3
F911 G3
I901 B3
F
I902 B6
I903 C5
I904 C6
I905 D5
I906 D6
I907 D4
I908 E6
I909 B5
I910 C8
I911 G3
I912 D10
I948 F4
G
I949 F4
CL 16532101_009.eps
230801
11