Tape Module (Non-Dolby Version) - Philips FW-C798/21/37 Service Manual

9-1
ETF7 TAPE MODULE
(Non-Dolby Version)
TABLE OF CONTENTS
Tape Module Wiring & variation table ....................... 9-1
Block diagram ............................................................ 9-2
Brief Introduction ....................................................... 9-3
Connector assignment ............................................... 9-4
Tape deck electronics & Tape adjustments ............... 9-5
ETF7 Non-Dolby board layouts ................................. 9-6
Analog Circuit diagram .............................................. 9-7
Servo Circuit diagram ................................................ 9-8
Exploded views & parts list ........................................ 9-9
Electrical parts list .................................................... 9-13
Tapedeck wiring (Double deck)
TO ETF BOARD
CONNECTOR 1770 (ND) 14P
CONNECTOR 1740 (DB) 14P
REC
REC
REV
FWD
CRO2*
MODE
SW
TAPE DECK
MOTOR
Mechanism B
TO ETF BOARD
CONNECTOR 1710 (ND) 5P
CONNECTOR 1720 (DB) 6P
Variations table for Analog Circuit
Autoreverse Non-autoreverse
ND/DD/FR ND/DD/FF
Chrome/Ferro Chrome/Ferro Ferro
2624 - - 100nF
2701 , 2702 150pF 270pF 270pF
2703 , 2704 100pF 220pF 220pF
2717 , 2718 10nF 15nF 15nF
2721 , 2722 6,8nF 6,8nF -
2727 , 2728 470pF 1nF 1nF
3616 10k 1k 1k
3618 6k8 - -
3620 10k trimmer - -
3622 - 10k trimmer 10k trimmer
3672 4k7 - -
3676 47k - -
3687 220R 220R -
3688 680R - -
3723 , 3724 15k 18k 18k
3725 , 3726 10R 10R -
3727 , 3728 5k6 6k8 6k8
3729 , 3730 3k3 4k7 4k7
3743 , 3744 1k5 2k2 2k2
3745 , 3746 3k3 5k6 5k6
3754 , 3755 1M 47R 47R
9-1
CRO2*
* Not for Ferro version
Mechanism A
TO ETF BOARD
CONNECTOR 1730 (3P)
Autoreverse Non-autoreverse
ND/DD/FR ND/DD/FF
Chrome/Ferro Chrome/Ferro
3769 12k 8k2
3772 6k8 5k6
4785 - - 0R jumper
3774 15k 8k2
6614 1N4148 -
7616 BC857B -
7622 BC847B -
Ferro
8k2
5k6
8k2
-
-
-