Non-Cenelec Tuner Portion - Component & Chip Layouts; Tuner Adjustment Table - Philips FW-C355 Service Manual

NON-CENELEC TUNER PORTION - COMPONENT & CHIP LAYOUTS
This assembly drawing shows a summary of all possible versions. For components
used in a specific version see schematic and respective parts list.
5
2
This assembly drawing shows a summary of all possible versions.
For components used in a specific version see schematic and
respective parts list.
Note: This layout drawings are applicable for both pt 1 and pt 2 pc board.
11-8
A
AM FRAME
AERIAL
B
3139 118 3462pt1 / 3463pt1 ...90280 dd wk149
D
1
A
3
C
4
3139 118 3462pt1 / 3463pt1 ...90280 dd wk149

TUNER ADJUSTMENT TABLE

( ECO6 FM/MW- and FM/MW/LW - versions with AM-frame aerial )
Waverange Input frequency Input
VARICAP ALIGNMENT
FM
87.5 - 108MHz
(65.81 - 74, 87.5 - 108MHz)
MW
FM/AM-version, 10kHz grid
530 - 1700kHz
FM/MW-version, 9kHz grid
531 - 1602kHz
LW
153 - 279kHz
MW
FM/MW/LW- version, 9kHz grid
531 - 1602kHz
FM IF
10.7MHz, 45mV
D
FM
continuous wave
FM RF
FM
108MHz A
87.5 - 108MHz
(65.81 - 74, 87.5 - 108MHz) mod=1kHz
87.5MHz
∆f=±22.5kHz
(65.81MHz)
VCO
98MHz, 1mV
A
FM
continuous wave
AM IF
C
450kHz ∆f=±10kHz
MW
V = 0.5mV
RF
connect pin 6 of
(as low as
IC 7101 (AM Osc.)
possible)
with 3.3kΩ to Vcc
AM AFC
C
MW
continuous wave
V = 2mV
RF
3)
AM RF
4)
MW
1494kHz
B
FM/MW/LW- and FM/MW-version
( 9kHz grid)
558kHz
531 - 1602kHz
LW 198kHz
MW
1500kHz
∆f = ±30kHz
FM/AM-version, 10kHz grid
V as low as
RF
560kHz
530 - 1700kHz possible
Use Service Testprogram. By selecting the TUNER TEST test frequencies will be stored as preset frequencies automatically.
1)
If sensitivity of frequency counter is too low adjust to max. channel separation
(input signal: stereo left 90% + 9%, adjust output on right channel to minimum)
3)
For AM RF adjustments the original frame antenna has to be used !
Repeat
11-8
Tuned to Adjust Output Scope/Voltmeter
8V ±0.2V
108MHz 5130
4.3V ±0.5V
87.5MHz
check
(1.2V ±0.5V)
(65.81MHz)
8V ±0.2V
1700kHz 5123
1.1V ±0.4V
530kHz check
6.9V ±0.2V
1602kHz 5123
1
1.1V ±0.4V
531kHz check
8V ±0.2V
279kHz 5122
1.1V ±0.4V
153kHz check
8V ±0.2V
1602kHz 5123
1.1V ±0.4V
531kHz check
IC 7101
21
0 ± 3 mV DC
2
5119
shortcircuit
2141
to block AFC
108MHz 2155
4
MAX
87.5MHz
5131
(65.81MHz)
152kHz ±1kHz
3
98MHz 3142
IC 7101
36
100nF
5111
5
IC 7101
40
100nF 5112
f
see
o
remark 2) symmetric
5114 0 ± 2 mV DC
2
2106
1494kHz
5102
558kHz
5
5103
198kHz
1500kHz 2106
f
o
symmetric
560kHz 5102
ECO6, Sys + PA with frame aerial, 070799
2)
RC network serves for damping the IF-filter while adjusting the other one.
4)
MW has to be aligned before LW.
1)