Panasonic KX-TG9333PK - Expandable Cordless Phone, Service Manual

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KX-TG9333PK/KX-TG9334PK//KX-TGA931T
Base Unit TR-DATA Signal (Normal mode) Base Unit TR-DATA Signal (Normal mode)
Base unit sends a dummy slot and receves all 6 slots every frame in normal mode.
Pin Number (Base unit)
IC701 IC501 (BU)
TEST TX_CW 21 24
Normal RX 22 19
23 18
23 34
RX-DATA included in TR-DATA RX-DATA included in TR-DATA
RX-DATA of BU is for checking for TX of HS or RX of BU.
When "TX-CW" mode in Handset, RX-DATA of base unit is LOW. (*1)
In the other case, RX-DATA of base unit is random. (*2)
Handset TR-DATA Signal (RX data in RX CW mode) Handset TR-DATA Signal (RX data in RX CW mode)
Base unit bursts a dummy slot in normal mode in any channel.
Handset should be worked in test mode in same channel as base unit.
Pin Number (Handset)
TEST RX_CW IC701 IC501 (HS)
Normal Dummy 23 36
RX-DATA of handset is LOW after receiving dummy from base unit.
RX-DATA just before that is same as dummy slot data of base unit.
(*3) Dummy slot data in TR-DATA of Base Unit (*3) Dummy slot data in TR-DATA of Base Unit
MODE
MODE
TR (RX)-DATA
TR (RX)-DATA
RADIOEN
SLOT_CTRL
TR (TX)-DATA
[REG BU] or [BU]
[REG BU] or [BU]
ITEM
ITEM
[HS] or [REG HS]
[HS] or [REG HS]
RF IC (IC701)
DSP IC (IC501)
TX
RADEOEN
SLOT_CTRL
TR_DATA
2 ms
SLOT_CTRL
(*1) (*1)
REDIOEN
40
µ
s
20
µ
s
SLOT_CTRL
TR-DATA TR-DATA
Base unit ID (40 bit)
preamble (32 bit)
RF IC (IC701)
DSP IC (IC501)
RX
200
µ
s
10
µ
s
TR (RX)-DATA TR (RX)-DATA
TR (RX)-DATA TR (RX)-DATA
random pattern because of no signal
(*2) (*2)
receiving TX_CW from handset
RX-DATA RX-DATA
TX (dummy ) (*3) RX RX
TX (dummy )
preamble (32 bit) Base unit ID (40 bit)
Zoom
Zoom
0 V
0 V
3 V
3 V
0 V
3 V
0 V
3 V
0 V
3 V