Front Control Board - Philips MC-77/22 Service Manual

8-1

FRONT CONTROL BOARD

TABLE OF CONTENTS
Standby (Power) part ....................................................... 8-1
Key Control (KEYB. 1) & Lightwash parts ....................... 8-2
Headphone, Jog (Volume) and CDC Key parts .............. 8-3
Electrical parts list ............................................................ 8-4
STANDBY (POWER) PART - CIRCUIT & LAYOUTS
1400 A1 2401 E3 2404 C3 3400 A3
1402 A3 2402 E3 2405 C4 3401 A3
1405 A2 2403 B3 2406 C4 3402 C3
1 2
A
1400
1
+C
2
3
4
B
5
GND_B
6
7
FE-BT-VK-N
To Front Display
C
# For Provision only
D
7400
TSOP2236
VS
CTRL
INP
CIRCUIT
E
OUT
BAND
AGC DEM
PIN
PASS
GND
1 2
This assembly drawing shows all possible versions. For components used in a
spsecific version see schematic diagram and respective parts lists.
3139 113 3444 pt 1 dd wk 103
8-1
3403 B4 6400 C4
3404 E4 7400 D1
3405 E4 7402 C4
3 4
STDBY LPS
3400 3401
390R 560R
A
GND_B
GND_B
For Low Power Standby version only
+C
B
7402
C
BC857B
D
+C
3405
2
100R
E
1
3
8239_210_88950 ... 3444 pt 1 dd wk103
3 4
This assembly drawing shows all possible versions. For components used in a
spsecific version see schematic diagram and respective parts lists.
3139 113 3444 pt 1 dd wk 103