philips 21pt1663 chassis l7.2e aa
TRANSCRIPT
-
7/23/2019 Philips 21pt1663 Chassis l7.2e Aa
1/14
6 Fault finding, Block diagram 13L7.2E
6 Fault finding, Block diagram
LED
Continuously
ON ?
No picture
No Sound
SWITCH - ON
THE TV. SET
No
Yes
LED Blinking?
(not error codes)
Peak voltage
at pin 6 IC7520 [A1]
>2v5?
Voltage
at pin 14 IC7520 [A1]
-
7/23/2019 Philips 21pt1663 Chassis l7.2e Aa
2/14
http://../Workdir/Frontpg1.pdf -
7/23/2019 Philips 21pt1663 Chassis l7.2e Aa
3/14
http://../Workdir/Frontpg1.pdf -
7/23/2019 Philips 21pt1663 Chassis l7.2e Aa
4/14
7 Diagrams and print lay-outs 16L7.2E
7 Diagrams and print lay-outs
015_008.EPS
2V / div DC5s / div
P4 (3 - 7520)
2V / div DC
5s / div
5V / div DC5ms / div
0.5V / div DC5s / div
P2 (C - 6510)
P3 (S - 7518)
P4 (3 - 7520)
P5 (1 - 7520)14V DC
P1 (7 - 5545)
100V / div DC5ms / div
P7 (6 - 7520)
0.5V / div DC5s / div
P6 (10 - 7520)
P10 (C - 6550)
95V DC
P10 (C - 6550)104V DC
P11 (C - 6570)16V DC
P11 (C - 6570)14.4V DC
P12 (6 - 7541)2.1V DC
P12 (6 - 7541)2V DC
P13 (2 - 7541)14.5V DC
P13 (2 - 7541)13.6V DC
P14 (8 - 7541)8V DC
P14 (8 - 7541)0.6V DC
P15 (9 - 7541)5V DC
P15 (9 - 7541)5V DC
P9 (14 - 7520)
0.5V / div DC5s / div
P8 (7 - 7520)
0.5V / div DC5s / div
1V / div DC5s / div
http://../Workdir/Frontpg1.pdfhttp://../Workdir/Frontpg1.pdf -
7/23/2019 Philips 21pt1663 Chassis l7.2e Aa
5/14
-
7/23/2019 Philips 21pt1663 Chassis l7.2e Aa
6/14
http://../Workdir/Frontpg1.pdf -
7/23/2019 Philips 21pt1663 Chassis l7.2e Aa
7/14
7 Diagrams and print lay-outs 19L7.2E
20V / div DC5ms / div
0.5V / div DC5ms / div
2V / div DC20s / div
100V / div DC20s / div
1V / div DC20s / div
L1 (C - 7445) L2 (3445 / 3442)S1 (41 - 7225 - 5D)
2V / div DC20s / div
2V / div DC20s / div
L3 (E- 7440) L4 (40 - 7225 - 5D)
0.5V / div DC5ms / div
F1 (7- 7401) F2 (1 - 7401)L11 (C - 6454)5V DC
L12 (C - 6443)13V DC
10V / div DC5ms / div
F3 (5- 7401) F4 (3 - 7401)
015_009.EPS
http://../Workdir/Frontpg1.pdfhttp://../Workdir/Frontpg1.pdf -
7/23/2019 Philips 21pt1663 Chassis l7.2e Aa
8/14
7 Diagrams and print lay-outs 20L7.2E
1V / div DC20s / div
V15 (4M7)
V8 (5 - 7255)
1V / div DC20s / div
1V / div DC20s / div
1V / div DC20s / div
V2 (38 - 7225 - 5B) V3 (28 - 7225 - 5B)V1 (13 - 7225 - 5B)
0.5V / div DC20s / div
V4 (29 - 7225 - 5B)
0.5V / div DC20s / div
V7 (16 - 7241)
0.5V / div DC20s / div
1V / div DC20s / div
V9 (16 - 7255)
0.5V / div DC20s / div
V11 (11 - 7255)
1V / div DC20s / div
1V / div DC20s / div
0.5V / div DC
20s / div
V13 (3M7)
V14 (2M7)
V12 (12 - 7225)
1V / div DC20s / div
0.2V / div AC20s / div
I1 (6 - 7225 - 5A)
0.5V / div DC20s / div
I3 (1 - Tuner)
I4 (1 - Tuner)only FST tuner
I5 (2 - Tuner)2V DC
0.5V / div DC20s / div
V5 (30 - 7225 - 5B) V6 (11 - 7225 - 5B)3.5V DC (PAL)
0.5V / div DC20s / div
V10 (14 - 7255)
I2 (IF - Tuner)
015_010.EPS
http://../Workdir/Frontpg1.pdfhttp://../Workdir/Frontpg1.pdf -
7/23/2019 Philips 21pt1663 Chassis l7.2e Aa
9/14
7 Diagrams and print lay-outs 21L7.2E
1V / div DC0.5s / div
C5 (41 - 7600)
1V / div DC5ms / div
1V / div DC5ms / div
1V / div DC5ms / div
C2 (50 - 7600)
C3 (49 - 7600)
C4 (1 - 1670)(with RC5 signal)
C1 (52 - 7600)5V DC
1V / div DC0.5s / div
C6 (42 - 7600)
015_011.EPS
http://../Workdir/Frontpg1.pdfhttp://../Workdir/Frontpg1.pdf -
7/23/2019 Philips 21pt1663 Chassis l7.2e Aa
10/14
7 Diagrams and print lay-outs 22L7.2E
A5 (Audio out)
1V / div DC0.5ms / div
5V / div AC1ms / div
1V / div DC0.5ms / div
A2 (55 - 7225 - 5E) A3 (15 - 7225 - 5E)
1V / div DC20s / div
A6 (Video out)
0.1V / div AC0.1ms / div
A1 (1 - 7225 - 5E) A4 (Audio out)
1V / div DC0.5ms / div
0.1V / div DC1ms / div
A7, A8, A9, A10
015_012.EPS
http://../Workdir/Frontpg1.pdfhttp://../Workdir/Frontpg1.pdf -
7/23/2019 Philips 21pt1663 Chassis l7.2e Aa
11/14
http://../Workdir/Frontpg1.pdf -
7/23/2019 Philips 21pt1663 Chassis l7.2e Aa
12/14
7 Diagrams and print lay-outs 24L7.2E
015_014.EPS
http://../Workdir/Frontpg1.pdfhttp://../Workdir/Frontpg1.pdf -
7/23/2019 Philips 21pt1663 Chassis l7.2e Aa
13/14
7 Diagrams and print lay-outs 25L7.2E
1
B
A
2 3 015_003.EPS100398
9503B19504B39505B39506B2
9507B29508A29510B29514B19515B3
0022B30033B10130B31501B2
2501B22502B12503B12504B12505A12506A1
2507A12508A22509A12510A1
2511B22512B22513A22514B22515B32516B3
2517B32518B32519B32520B3
2521B22522B12523B12524B12525A23501B2
3502B23503B23504B23505B2
3506B13507B23508B13509A13510B13511A1
3522A23523A23524A23525B2
3526B23527B23528B23529B23530B23531A2
3532B23533B23534B33536B3
3537B33539B23540B25501B16501B16502B2
6503B26504B36505B37220B3
7501B17502B37503B27504B27505A17506A1
7507B17508B27509B27510B2
7511A17512A17513A17514A17515A29501B1
1
B
A
23
0022B30033B10130B31202B21203B21204A22201B2*2202B2*2203B2
2206B2*2207B2*2208A22209A1*2210B2*2211A1*2212A1*2213A2*2214A2*2215A2*2216A1*2217A1*2220A1*2221A1*2224A2*2225A2*2226A2*2227A1*2228A22229B12230A12231A1*
2232A1*2234A12235A1*2236A1*2237B2*2238B2*2239A1*2240A1*2241A12242A1*2243A1*2244A1*2245B12246B1*2247B1*2248B12249B1*2250B12251B1*2252A12253B1*2254B1*
2255A22256B3*2257B32260A12261A22262A22263A22264B32265B3*2266B1*2267B1*2268B12271B3*2272B3*2273B1*2274A1*2276A1*2277A1*2278A1*2279A2*2280A1*2281A1*
3201B2*3202B2*3203B2*3207B2*3211B2*3213B33214B2*3215B2*3216B13217B13218A2*3219A2*3220A2*3221A2*3222B2*3223A2*3224A1*3227A1*3228B2*
3229B1*3230B1*3233B1*3234B1*3235A1*3238B1*3239B1*3240A1*3242A1*
3243B1*3244B1*3246B23247B13248B1*3249B33250B23251B3*3252B3*3253B3*3254B24200B2*4201A2*4203B2*4204B2*4205B2*4206B2*4207B2*4209B2*4211B3*4214B2*4220B1*
4221B1*4222B1*4223B1*4233A1*5201B2*5202B25203B15204A15205A25206B25207B26201B26202B26204A16205B16206B36207B37201B27202A17203B17204B37205B2*
7207B2*7208B2*7209B1*7210B2*7211A2*7212A2*7214B17215B2*7216B2*7220B39200B19201B29202B29205B39206A29207A29208B19209A29210B19211B19212B19213B3
9214A29215B29216B19217B29220B29221B39223B19224B29257B3
*=chipcomponent
1
B
A
2 3 015_008.EPS170398
http://../Workdir/Frontpg1.pdfhttp://../Workdir/Frontpg1.pdf -
7/23/2019 Philips 21pt1663 Chassis l7.2e Aa
14/14
7 Diagrams and print lay-outs 26L7.2E
015_015.EPS
http://../Workdir/Frontpg1.pdfhttp://../Workdir/Frontpg1.pdf