KX-TGK310RUB, KX-TGK320RUB, KX-TGKA31RUB - Panasonic Telephone Service Manual (repair manual). Page 89

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1. RTL (Retention Time Limited)

The “RTL” marking indicates that its Retention Time is
Limited.
When production is discontinued, this item will
continue to be available only for a specific period of
time.
This period of time depends on the type of item, and
the local laws governing parts and product retention.
At the end of this period, the item will no longer be
available.

2. Important safety notice

Components identified by the   mark indicates special 
characteristics important for safety. When replacing any 
of these components, only use specified manufacture's 
parts.

3. The S mark means the part is one of some identical parts. 

For that reason, it may be different from the installed part. 

4. ISO code (Example: ABS-94HB) of the remarks column 

shows quality of the material and a flame resisting grade 
about plastics.

5. RESISTORS & CAPACITORS

Unless otherwise specified;
All resistors are in ohms (

) k=1000, M=1000k

All capacitors are in MICRO FARADS (

F) p=F

*Type & Wattage of Resistor

(*1)  Delete the Acetate Tape (Ref. No.16) if change the
Locator Button (Ref. No. 3).

(*1) When replacing IC611 or X501, make the adjustment
using Batch file CD-ROM for setting. Refer to parts list of
Fixtures and Tools (P.94). Refer to How to download the
data (P.56) of Things to Do after Replacing IC or X'tal
(P.56).
(*2) When removing E1 use special tools (ex. Hot air
disordering tool).
(*3) Backside of this IC has a ground plate. Refer to How to
Replace the Flat Package IC (P.63).
(*4) Supplied IC is Flat Package Type.

Type

ERC:Solid
ERDS:Carbon
ERJ:Chip

ERX:Metal Film
ERG:Metal Oxide
ER0:Metal Film

PQ4R:

Chip

ERS:Fusible Resistor
ERF:Cement Resistor

Type

ECFD:Semi-Conductor
ECQS:Styrol
ECUV,

PQCUV, ECUE

:Chip

ECQMS:Mica

ECCD,ECKD,ECBT,F1K,ECUV:Ceramic
ECQE,ECQV,ECQG:Polyester
ECEA,ECST,EEE:Electlytic
ECQP:Polypropylene 

Wattage

*Type & Voltage Of Capacitor

10,16:1/8W

14,25:1/4W

12:1/2W

1:1W 2:2W 3:3W

Voltage

ECQ Type

ECQG
ECQV Type

05:50V
  1:100V
  2:200V

ECSZ Type

0J     :6.3V
1A     :10V
1C     :16V
1E,25:25V

1V     :35V
50,1H:50V
1J      :16V
2A      :100V

0F:3.15V
1A:10V
1V:35V
0J:6.3V

Others

1H:50V
2A:100V
2E:250V
2H:500V