Philips FW-C38/21 Service Manual page 39

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
OPTIONS / VARIANTS TABLE
MODULE ETF7
VARIANT 1 2
FEATURES DB/DD/FR ND/DD/FR ND/DD/FF
Deck configuration double double
Deck type (Tokyo Pigeon) CWE CWE
Autoreverse yes (B) yes (B)
Auto Replay no no
Motor configuration single single
Auto tape type selection yes yes
Dolby type B Noise Reduction yes no
19 kHz pilot suppression yes no
Normal / High speed dubbing yes yes
Cue/Review & Fwd/Rewind yes yes
DB = Dolby B NR
DD = Double Deck
FF = Non-Autoreverse
FR = Autoreverse Deck B
ND = Non-Dolby
SD = Single Deck
9-1
CRO2
Mechanism A
TO ETF BOARD
CONNECTOR 1730 (3P)
Variations table for Analog Circuit
Autoreverse Non-autoreverse
3
ND/DD/FR ND/DD/FF
2701 , 2702 150pF 270pF
double 2703 , 2704 100pF 220pF
2717 , 2718 10nF 15nF
CWE
2727 , 2728 470pF 1nF
no
3616 10k 1k
yes (A+B)
3618 6k8
single
3620 10k trimmer
3622 - 10k trimmer
yes
3672 4k7
no
3676 47k
no
3688 680R
no
3723 , 3724 15k 18k
yes 3727 , 3728 5k6 6k8
3729 , 3730 3k3 4k7
3743 , 3744 1k5 2k2
3745 , 3746 3k3 5k6
3754 , 3755 1M 47R
3769 12k 8k2
3772 6k8 5k6
3774 15k 8k2
6614 1N4148
7616 BC857B
7622 BC847B
PCS 103 373
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