Philips ts 6940 service manual

Page 1

Digital midi stack T86940

I43/58

Sewfice
Scmcc
SerVIce

For repair iniorrnaiion of ihe tape transports see
Service Manual 0! tapeiranspon RN2 and HR2

Service Manual

Contents: Page
Connections and Controls 2
Specification 3
Service test program 4
Warnings 5
Handling Chip Components 6
Standard Components - table 6
Wiring Diagram 7 - 9
Tuner unit circuit diagram 10 - 12

component lay out 13 - 14

adjustment table 15
Power unit circuit diagram 16 - 18

component lay out 19 - 21
Cassette unit adjustment table 22

component lay out 23 - 24

circuit diagram 25 - 27
Front unit component lay out 28 - 30

circuit diagram uP-part 31 - 33
LF-part 34 - 36

Exploded View 37 - 38
Mechanical partslist 39
Electrical partslist 40 - 45

-mmm.a-m
mmmwfluw
Imago-,mmern-u
mmlmmv

Published by Consume! Eiocimnics Prinlsd In The Netherlands °Copyligm reserved Sublscl to modification 4822 725 23278

Page 2

CCNTTIUDLS

1 Power switch
2 Tone controls
3 INFRARED remote sensor
4 AUTO SCAN button for scanning preset stations
5 AUTO PROGRAM button for autom. programming of preset stations
6,7,8,9 SOURCE SELECTION buttons 1401,1402,
10 DISPLAY
shows: ' sound sources (Cass, ADD or CD)
in TUNER mode -£requency in RN: or MHz
-selected wave bends PM or M"
-stereo
-preset station number
-progr. to indicate that the frequ.
can be progrsnmud
* in TIMER mode -the remaining time in minutes until
the set will go to stand by.
11 BAND selector button
In stand by mode: press 10 to go to TIMER mode
12 PRESET DOWN for tuning the preset stations
13 PRESET UP for tuning the preset stations
14 TUNING UP/MINUTES UP: for tuning to higher £requ./timer setting
15 TUNING DOWN/MINUTES DOWN: tuning to lower frequ./timer setting
16 time button - in TIMER mode CLEAR button
17 PROGR button: to program preset transmitters
1' VOLUME control with LED indic. (flashes while remote controlled)
19 BALANCE control
20 DYNAMIC Bess Boost button
Tape decks
22 MODE lever for selecting the reverse mode
23 PAUSE button
24 WIND button
25 RE button
26 PLAY button
27 DIRECTION button for reversing the tape direction on deck II.
28 STOP/EJECT button
29 Fe/CrOZ button for selecting the type of tape.
30 HIGH SPEED DUBBING selector
31 DOLBY NR button
32 RECORD button deck I
33 DIRECTION indicators for deck II
34 HIGH SPEED DUEBING LED indicator
35 DOLBY NR LED indicator
CINUIIEZEICXIS
A LOUDSPEAKER terminals for 2 or 4 loudspeakers >8 Ohm
3 FM antenna terminal 300 Ohm/75 Ohm
C CD IN for connecting a compact disc player
D AUX/TV IN for the sound channel of a TV set etc.
I PHONO IN for a record player with a magnetodyn. element
F PNONO SUPPLY socket for a record player without its can supply
G REMOTE RC5 OUT - can be used with the REMOTE IN of a CD player
I MmINS CABLE
21 PHONES socket for stereo headphones 32-1000 Ohm

2

1271
3505/3513
6420
1413
1414
1403,1404
1400

1406

1412
1411
1410
1407
1408
1414
3500
3545
1405

1070
1070
1070

6721/6722
6725
6724

1272
5131/1104
1554
1554
1554
1286
1273

1274

CS 35 785