Service Manual
3-105
Modules
Entrance telephone
● Grothe,Telegärtner
● HDL - Brazil (models: F3A, F4A, F5A)
Figure 3-42 HDL entrance telephone - Brazil
Additional components include: R1 (1,2 k Ω / 0,25W / 5%) and R2 (33Ω / 0,25W / 5%) resistors,
and C1 capacitor (1,0 μ F / 250 Vac / Non-polarized). The connection to the PABX is made with
two wires (a1 / b1) while the connection to the entrance telephone interface is made with four
wires (a2 / b2, KL1, KL2).
Figure 3-41Grothe entrance telephone
TO1UB1 UB2TS1 TS2 TO2 KL1a1 b1 KL2
a
b
HiPath 1100
TFE interface
Electric latch
Grothe transformer
TR 1973 K
TR
TS2
a2 b2
12V
~
TS1
b
a
12 V~
12 V~
Grothe TFE
6205
TR
KT
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