Panasonic KX-1T7533G User manual

ORDER NO. KMS9808296C2
Manual
DIGITAL PROPRIETARY TELEPHONE
FOR DIGITAL SUPER HYBRID SYSTEM
KX-1T7533G
KX-1T7533G-B
Black Version
(for Germany)
Service
@ SPECIFICATIONS
Station Loop Limit: 40 ohms
Cabling Method: 2 pair wire
Jacks: PABX, Handset/Headset, Telephone
Display: 16 digits (max.)
Dimensions: 224 (W)x88 (H)x265 (D) mm with handset
Weight: 1.2 kg
Design and specifications are subject to change without notice.
A\ WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians.
Any attempt to service or repair the product or products dealt with in this service information by anyone else could result in serious
injury or death.
a
©1998 Kyushu Matsushita Electric Co., Ltd.
| All rights reserved. Unauthorized copying and distribution is a violatin of law.

KX-1T7533G/KX-T7533G-B
When you note the serial number, write down all of the 11 digits. The serial number may be found on the label affixed to the bottom of the unit.
TABLE OF CONTENTS
Page Page
FOR SERVICE TECHNICIANS 1.0... eee eeeeeeeeeeeees 2 HOW TO REPLACE THE FLAT PACKAGE IC........... 30
LOCATION OF CONTROLS ....... ce eeceeseeseseeteeceeeeeeens 3 PRINTED CIRCUIT BOARD ........ceccccestesteertentens 33, 40
DISASSEMBLY INSTRUCTIONS ....... eee ccseteeeeeeees 4 WAVEFORM on. cccoi scescetcdeesicscpeceses cassesbsneaaageaiveneeargieedae 35
ICS DATA arose cectceeieciihe ie ahaa Rie stesiastepbdaterens 6 SCHEMATIC DIAGRAM ........cscesceseceeeeensessseeesereneees 39
BLOCK DIAGRAM .........::ccesscscseeseseseesesseseeeeneesnsseeeenes 11 CABINET AND ELECTRICAL PARTS LOCATION ... 41
CIRCUIT OPERATIONS ...... cee eeeeeeeeeeneesseseeneeeenes 12 ACCESSORIES AND PACKING MATERIALS .......... 42
TROUBLESHOOTING GUIDE .........cccceceeseseceeeeees 24 REPLACEMENT PARTS LIST .......cccccccsseseeseeseeeneees 43
TERMINAL GUIDE OF IC’S TRANSISTORS,
AND DIODES...... 29
FOR SERVICE TECHNICIANS
~_
. Note the following items when exchanging the LEDs (Ref. No. D100-117, 130, 201) of Dial P.C. Board.
1) Do not reuse a LED which is removed from the P.C. Board.
2) Use a soldering iron (less than 15 W) for exchanging LED.
3) Do not heat the LED for more than 2 seconds.
4) Do not move the LED after soldering.
2. This unit employs the switch which is influenced by the light for the hook switch. When you open the cabinet to repair
the unit in the bright light, the hook switch might work improperly. Therefore, take care not to shine the hook switch
directly, or use the jig as shown below.
JIG (Part No. PSHG1176Z)
SW 1 (HOOK SWITCH)

LOCATION OF CONTROLS
Program Button LCD (Liquid Crystal Display)
Intercom Button
Conference Button
Soft Button (S1 through $3)
Shift Button
FWD/DND Button
(Call Forwarding/Do not Disturb)
Message Button
Flash Button
Pause Button Flexible Outside (CO)
Line Button
Auto Dial/Store Button
Auto Answer/Mute Button
Transfer Button
Redial Button
Jog Dial
Microphone
Hold Button
Speakerphone Button

DISASSEMBLY INSTRUCTIONS
HOW TO REMOVE THE LOVER CABINET
1
1) Remove the 4 screws@®.
2) Remove the lower cabinet.
HOW TO REMOVE THE HOOK BUTTON
Procedure
1-2
1) Remove the hook button.
HOOK BUTTON
HOW TO ATTACH THE SPRING
SPRING
HOOK BUTTON

KX-T7533G/KX-T7533G-B
No. 3
Procedure
172-3
H
OW TO REMOVE THE SWITCH AND MAIN BOARDS
) Remove the screw@).
) Pull out the switch board connector.
) Remove the switch board.
)
)
Pull out the flat cable.
Remove the 2 screws@).
) Pull out the speaker and microphone connectors.
7) Remove the main board.
1
2
3
4
5
6
CONNECTOR
HOW TO REMOVE THE LCD BOARD
Procedure
1) Pull out the flat cable. (See Fig. 1)
2) Remove the LCD block. (See Fig.2)
3) Remove the 2 screws @.
4) Remove the lower cabinet.
5) Remove the LCD board.

KX-1T7533G/KX-T7533G-B
1.101
Pin | Dir. _|_Pull Up
DBS = TT
DB2 bidi
IC DATA
| to | Act. | Block _|
PTSBO3
Data Bus [2]
Data Bus [1]
2.0 Data Bus [0]
input
input | 12-38k Ptsp01u |_ 2.0
CSN | 8 | input| -- | pT5D01 | 1.0 | Chip Select
REN | 10 | input PTSD01U | 2.0 | Read Enable Command
WEN | 9 PTS5DO1U| 2.0 | Write Enable Command
RST 63 | input _ PC5D21 | 0.01 | Asynchronous Reset Input
INTON 11 | output — PC5001 0.01 Interrupt Request
INTIN 12 | output 0.01 | Interrupt Request
DRO 38 | input — | pcspo1 | 0.6 | Dpits Receive Data [1]}
DR1 39 | input | pcspot | o6 | Dpits Receive Data [0]
DXO 40 | output oa | Pcsoo2 | 0.6 | Dpits Transmit Data [1]
DX1__|_ 41 | output ee : Dpits Transmit Data [0]
CK512K | 37 | output| Dpits Bit Rate Clock
SRO 19 | input | 12-38k TTL — PTSDO1U | 0.1 | Serial Receive Data Strear [0]
input | 12-38k C TTL = 0.1 | Serial Receive Data Stream [1]
| sx | 21 | =a aa CMOS 4.0mA 0.1 Serial Transmit Data Strearn
output - CMOS 4.0mA | high | PC5002 2.1 Serial Stream Clock
| ePo | 13 [output] — ' CMOS 2.0mA 0.01 | Extermal Channel Pulse [0
EP 4 14 | output -s- CMOS 2.0mA | high | PC5001 | 0.01 | External Channel Pulse [1]
EP2 15 | output -- CMOS 2.0mA | high | PC5001 | 0.01 | External Channel Pulse [2|
-6

KX-T7533G/KX-T7533G-B
Name Pin | Dir. Pull Up | Type lo Act. Block MHz Descriptions
EP3 16 | output --- CMOS high | PCSOO1 | 0.01 External Channel Pulse [3]
Pl 61 | input --- CMOS schmidt --- high | PC5D21 | 0.01 Rotary Encoder Input [Pos]
| input |---| CMOS schmidt | -- _| high | PC5D21 | 0.01 | Rotary Encoder Input [Neg]
ued} =] GMS 4.0mA 0.01 | LED Column Drive [0]
output CMOS 4.0mA | high | PC5002 | 0.01 LED Column Drive [1]
CLM2 sf sat ih 8008 J 0.01 | LED Column Drive [2]
CLM3 CMOS 0.01 | LED Column Drive [3]
CLM4 0.01 | LED Column Drive [4]
NROWO CMOS 4.0mA low PC5002 | 0.01 LED Row Drive [0]
NROW1 ef Be low | PC5002 | 0.01 | LED Row Drive [1]
| NROW2 | 52 | output} --- | CMOS tow | PC5002 | 0.01 | LED Row Drive [2] =
| NROWS | 53 | output} -- | = CMos | iow | PC5O02 | 0.01 | LED Row Drive [3]
| NROw4 | 54 [output| | cmos low 0.01 | LED Row Drive [4)
| NROWS | 55 |output| -- | cmos | 4.0ma | low | Pcsoo2 | 0.01 | LED Row Drive [5] |
| nROws | 56 | output] -- | cmos | 4.0ma | low | Pcsooz | 0.01 | LED Row Drive [6]
| NROw7 | 57 | output] -- | cmos | 4.0ma | tow | Pcs002 | 0.01 | LED Row Drive [71
| NROWs | 58 | output] --- | CMOS PC5002 LED Row Drive [8]
| NROws | 59 | output| | __CMos PC5002
| ipo | 27 | input | 12-38k | CMOS - PCSDO1U
| tpi [ 28 | input | 12-30 | cmos | | high [Pcspotu| 0.01 | inputPon ty)
0 ine)
input | 12-36k | cmos | -~ [high |Pcspotu| 0.01 | Input Pot fa)
30 | input | 12sec | cmos | | high [Posporu| 0.01 | inputPon is)
[23 |output| | CMos | 4.0ma | high | PCSO02 | 0.01 | Output Port (0)
U
wo
opi [24 |output| | CMOS | 4.0mA | high | PCSO02 | 0.01 | Output Port [1]
ope | 25 fouput[ | cmos | 4.0ma | high | Pcsoo2 | 0.01 | OutputPonia)
| ops | 26 [output| |= cMOS | 4.0ma | high | PC5O02 | 0.01 | Output Port [3]
| kak | 22 [output] | cmos | 4.0ma | high | Pcsoo2 | 0.20 | 2kH2 Clock Output (duty25%)_|
CK16M CMOS high | PC5001 | 16.4 | Master Clock Out
OS Analog PC5xX02 | 16.4 | X'tal in (XIN)
Analog PC5X02 16.4 | X'tal Out (XOUT)
not used
oO c is
no)
Cc
*
er en
as a
| || not used
vDD1
|
|
Vda
6)
| || ved vy
vpp3_| 49 | vdd a
VSSi Hes (60)
|__| Vss (GND)
vss Vss (GND)
a7

KX-T7533G/KX-T7533G-B
2.1C2
VREFDA
AG1
NO. /O
Analog
output
Classification
APMP 1 | Analog | Analog
input
Power
supply, etc.
Power
supply, etc.
Analog
Power
Function
Non-inverting input terminal of microphone amplifier M1.
Connect to the microphone.
Reference voltage terminal of DAC.
Connect the capacitor of 40uF between this terminal and pin 9(AG2).
Ground terminal of the analog circuit.
Output terminal for the handset receiver.
HO+ terminal and HO- terminal are biased to Vdd/2 voltage.
HO- terminal is the inverse porality output terminal for pin 4 (HO+).
Connect the capacitor in series between the handset and these terminals to
cut the DC.
Use the nonpolar type capacitor.
5V power supply terminal of analog circuit.
Output terminal for the speaker amplifier.
Connect to the external speaker amplifier input terminal.
SPO terminal is biased to Vdd/2 voltage.
Connect the capacitor of 0.1yF in series between the externa! speaker
| amplifier input terminal and this terminal.
Ground terminal of the analog circuit.
supply, etc.
Micro-
computer
interface
Mode selection terminal of microcomputer interface. Inputting "O" selects
the serial mode, and "1" selects the parallel mode.
System reset terminal.
The system is reset when "0" is pressed.
Power
Supply, etc.
Ground terminal of the digital circuit.

KX-T7533G/KX-T7533G-B
: /O Classification Function
13 |3states | Output port | Outputs BITO signal of OPORT1 resistor.
Outputs BIT1 signal of OPORT1 resistor.
Fl
5V power supply terminal of digital circuit.
Outputs BIT2 signal of OPORT1 resistor.
Outputs BITS signal of OPORT1 resistor.
Outputs BIT4 signal of OPORT1 resistor.
Outputs BITS signal of OPORT1 resistor.
Outputs BIT6 signal of OPORT1 resistor.
Outputs BIT7 signal of OPORT1 resistor.
Output terminal for PCM data
Input terminal of Sync. signal for PCM interface. The frequency of input sync.
signal is 8 kHz.
Input terminal of shift clock pulse for PCM data. Input pulse frequency
range is 64 kHz~2.048 MHz.
PCM data (TXD terminal signal) is output at the positive edge.
PCM data (RXD terminal signal) is sampled at the negative edge.
The sampling is performed inside LSI.
Clock pulse output terminal. Output pulse frequency is 6.144MHz.
System reset (inputting "O" to -RESET terminal) doesn't stop this output.
Clock pulse output terminal which has selective frequencies.
The following 4 frequencies can be selected by resistor setting:
12.228, 4.096, 2.048, 1.536 (MHz)
System reset (inputting "O" to -RESET terminal) selects the frequency of
1.536MHz and doesn't stop this output.
Ground terminal of digital circuit.
Input terminal of oscillation circuit.
Connect the oscillator and resistor between this terminal and pin 30(0SCQ),
moreover, connect the capacitor between this terminal and digital ground to
Output terminal of oscillation circuit.
Connect the oscillator and resistor between this terminal and pin 29 (OSC)
moreover, connect the capacitor between this terminal and digital ground to
5V power supply terminal of digital circuit.
Outputs 8 kHz clock pulse which is synchronized with -FSYNC.
Connect to the digital ground.
SV power supply terminal of analog circuit.
Input terminal of TX handset signal.
Either this signal or the signal supplied to pin 49 (HI) is input to AD converter.
Reference voitage terminal of AD converter.
[Name NO
| OPO
OP1 14 | output
ia D5V1 15 --- Power
Supply, etc.
47 | output
a ue Output port
utpu
OPS ae
OP6 20
OP7 21
RXD 22 | TTL Input terminal for PCM data
input
TXD 23 | Output
—FSYNC 24 TE PCM
input interface
BCLK 25
MCLK 26 | Output Clock
CLKO 27
Power
supply, etc.
OSCI 29 Clock
make the oscillation circuit.
OSCO
make the oscillation circuit.
D5V2 Power
supply, etc.
—INT 44 | Output Micro-
computer
interface
TEST 45 | CMOS Power Test terminal
input supply, etc.
A5V3
HI Analog
VBB Power
supply, etc.
Connect the capacitor of 10uF between VBB terminal and pin 50 (AG3).

KX-T7533G/KX-T7533G-B
Name [NO.| 1/0 _ | Classification Function
ri 49 | Analog Analog Input terminal of TX microphone signal.
input Either this signal or the signal supplied to pin 47 (HI) is input to AD converter.
AG3 50 —- Power Ground terminal of analog circuit.
A5V4 51 supply, etc. | 5V power terminal of analog circuit.
AP2HO 52 | Analog Output terminal of microphone amplifier H2.
output Connect the capacitor of 0.1p:F to this terminal to cut the DC.
Inverting input terminal of microphone amplifier H2.
input Connect the capacitor of 0.1p1F to this terminal to cut the DC.
54 | Analog Output terminal of microphone amplifier H1.
output Connect the capacitor of 0.1pF to this terminal to cut the DC.
AP1HN 55 | Analog inverting input terminal of microphone amplifier H1.
Connect to the handset.
Non-inverting input terminal of microphone amplifier H1.
AP1HP 56 Analog
VREFM Reference voltage terminal of microphone amplifier.
Power Connect the capacitor of 40 uF between this terminal and pin 56 (MICG).
supply, Otc: Ground terminal of analog circuit.
As 59 | Analog
output
Anal
APMN 60 | Analog —
input
Output terminal of microphone amplifier.
Connect the capacitor of 0.1,F to this terminal to cut the DC.
Non-inverting input terminal of microphone amplifier M.
=f0=