Sony CFS-B5LMK2 - Circuit Boards Location Guide; Tuner Section Printed Wiring Board

CFS-B5LMK2
– 13 – – 14 –
5-2. CIRCUIT BOARDS LOCATION
SECOND board
ISS board
MICROPHONE board
SUPPORT board
TUNER boar
d
AC board
BATTERY board
AUDIO board
• IC Block Diagram
IC1 CXA1538S
30 29
4321
28 27 26 25 24 23 22 21 20 19 18 17 16
VCO
MPX REG.
REG
FM FRONT-END
AM FRONT-END
1/2
COUNTER
1/2
COUNTER
5 6 7 8 9 10 11 12 13 14 15
MONO/ST
SELECT
DECORD AMP RIPPLE
FILTER
MUTING
PD 1
PD 2
AUTOBLEND
BAND PASS
MUTE
TUNING
INDICATOR
AM
IF/DET
FM IF/
DISCRI
GND PLL LPF2 MPX REG VCO MUTE AM OSC AFC FM OSC REG OUT FM RF AM RF IN FM RF IN FE GND FM/AM FE OUT FM DISCRI
BAND SELECT
AM IF IN
FM IF IN
TUNED IND
GND
AFC/AGC 2 AFC/AGC 1
VCC
LCH OUT
RCH OUT
PLL LPF 1
PILOT DET
LPF 1
PILOT DET
LPF 2
ST IND/
VCC CHECK
RIPPLE
FILTER
5-3. PRINTED WIRING BOARD — TUNER SECTION —
Note:
• X : parts extracted from the component side.
• b : Pattern from the side which enables seeing.
D1 B-5
D2 B-5
D3 B-2
IC1 C-3
Q1 B-2
Q2 D-4
• Semiconductor
Location
Ref. No. Location
(Page 17)