HYT TM-800 User manual

1
CONTENTS
Revision History………………………………………………………………………………1
General…………………………………………………………………………………………1
Radio Overview………………………………………………………………………….………3
Software Specification…………………………………………………………………………6
Circuit Description………………………………………………..…………………………..78
Semiconductor Data………………………………………………………………………….83
Component Description…………………………………………..…………………………90
Part List 1…………………………………………………………………………….…………91
Troubleshooting Flow Chart…………………………………………………….…………91
Exploded View…………………………………………………………………..……………107
Part List 2…………………………………………………………………………..………….108
Disassembly and Reassembly for Repair………………………………………………..109
Remote Kit Installation (Optional)…………………………………………………….…..112
Packing……………………………………………………………...…………………………114
Adjustment……………………………………………………………………...…………….115
Adjustment Description……………………………………………………………….……122
Terminal Function……………………………………………………………………………128
TM-800 PC Board View……………………………………………………………………...132
TM-800 Schematic Diagram………………………………………………………………….142
TM-800 Block Diagram…………………………………………………………………….…147
Specifications…………………………………………………………….…………………148
Appendix 1 Entering Characters………………………………………………….…………149

2
Revision History
Version Date Contents Revised
8130M80000000 September 2005 Initial release
8130M80000010 September 2006 1) Semiconductor data upgrading ( Flash ROM & DTMF Receive)
2) Component description upgrading (IC103 & IC122 in Tx-Rx
Unit)
3) Part List 1 upgrading
4) Part Number of Part List 2 upgrading
General
Manual Scope
This manual is intended for use by experienced technicians familiar with similar types of communication
equipment. It contains all service information required for the equipment and is current as of the
publication date.
Precautions
Safety Standards
●DO NOT operate your radio when someone is either touching or standing within 2 or 3 feet of
the antenna, to avoid the possibility of radio frequency burns or related physical injury.
●DO NOT operate the radio near electrical blasting caps or in an explosive atmosphere.
●Switch OFF the radio while refueling or parking at gas station.
●Turn off your radio in any place where posted notices instruct you to do so.
●DO NOT modify the radio for any reason.
●DO NOT expose the radio to direct sunlight over a long time, nor place it close to heating
source.
●DO NOT place the radio in excessively dusty, humid areas, nor on unstable surfaces.
● Refer the service to qualified technicians only.
Operation Safety Guidelines
● For vehicles equipped with electronic anti-skid braking systems, electronic ignition systems or
electronic fuel injection systems, interferences may occur during the radio transmission. If the
foregoing electronic equipments are installed on your vehicle, please contact your dealer for
further assistance to make sure that the radio transmission will not interfere with these
equipments.
● For radio installation in vehicles fueled by LP gas with LP gas container within interior of the
vehicles, the following precautions are recommended for personal safety.
(1) Any space containing radio equipment shall be isolated by a seal from the space in
which the LP gas container and its fittings are located.
(2) Remote (outside) fitting connections shall be used.
(3) Good ventilation is required for the container space.

3
Installation Safety Guidelines
●Do not mount the mobile radio overhead or on a sidewall unless you take special precautions.
●If someone were to remove the radio and fail to replace it properly, road shock could bump the
radio loose, and the falling radio could, in some circumstances, cause serious injury to the
driver or a passenger. In a crash, even when properly installed, the radio could break loose
and become a dangerous projectile.

4
Radio Overview
Front Panel View
①
①①
① Power
Press the power button to switch the radio on/off.
②
②②
② Selector Knob
Volume Up/Down, Channel Up/Down, Zone Up/Down features can be programmed to this knob
(Set by your dealer).
Turn the knob clockwise to adjust upwards and counter-clockwise to adjust downwards.
③
③③
③ LCD Display
Please refer to “LCD Display” section.
④
④④
④ Up/Down Key
Volume Up/Down, Channel Up/Down, Zone Up/Down features can be programmed to the keys (Set
by your dealer).
⑤
⑤⑤
⑤ Microphone Jack
Insert a 6-pin connector into the jack.
⑥
⑥⑥
⑥ Programmable Function Key (PF1-PF6)
Your dealer can program these keys as shortcuts to various radio features.

5
Microphone
LCD Display
Indicator Description
1. Display zone / channel number.
2. Display zone / channel label (set by your dealer, up to 12 alphanumeric
characters).
3. Display channel Frequency
4. Display the preprogrammed function
1. Display zone / channel number.
2. Display transmit power level (H, M or L).
3. Display the preprogrammed function.
Appears when the selected channel is busy.
Appears when [MONI] key is pressed to disable CTCSS, CDCSS, DTMF or
2-Tone/5-Tone.
Appears when [MONI] key is pressed to switch the speaker on.
A 1. Indicate second development feature.
2. Appears when the auxiliary port is open.
SCAN Appears while scanning.
CALL Appears when transmitting selective call.
Appears when a new message is received.
Appears when the selected zone is in the scan list.
Appears when the selected channel is in the scan list.

6
Rear Panel View
①Antenna Connector
Used to connect external antenna.
①Power input Connector
Adopt HYT-authorized DC power cable and 13.6 V input AC power.
①Speaker Jack
Used to connect external speaker and only available for the plug of 3.5 mm.
①GPS Antenna Jack
①15 Pin Connector (for accessories)

7
Software Specification
Radio Modes
1. Frame of Radio Modes
Firmware Download
PC Mode
Test & Adjust Mode
Clone Mode Wired Clone Mode
Wireless Clone Mode
Dealer Mode Channel Set Mode
Zone Information Mode
Function Set Mode
Scan Information Mode
DTMF Set Mode
2-Tone Set Mode
5-Tone Set Mode
Embedded Message
Emergency Set Mode
Stun Set Mode
Mode Information Mode
User Set Mode
User Mode Conventional Mode
Model Set Mode
Model & Adjust Mode

8
2. Keypad Entry for Mode Startup
MODE Main Menu Display/Sub
Menu Operation Remarks
USER
MODE
Conventional
Mode ------------------------- Turn on the power to enter Conventional Mode
User Set Mode
Function Set
While holding down [PF1]
key, turn on the power
PowerOn Text Refer to Appendix 1 “Character
Input”
PWR Password Power on password set
Hook & Moni
Key Assign Programmable Function Key
DEALER
MODE
Channel Set Mode Channel Set
Turn on the power while
holding down [PF6] key to
enter Dealer Mode, select
one of Menu items.
New zone & ch, edit ch
Zone Information
Mode Zone Inform Only existing Zone can be edited
Function Set
Function 1
Function 2
Tone Volume
Alert Tone
Aux Inform
Data Password
Scan Information Scan Set
Zone Scan List
DTMF Set Mode
DTMF Encode
DTMF Decode
Auto Dial List
PTT ID
2 Tone Set Mode
2Tone Encode
2Tone Decode
2Tone Option
5 Tone Set Mode
Parameter
Encode Teleg
Encode Frame
Encode Option
Decode Teleg
Decode Option
Embedded
Message
Embedded Msg1 32 bytes
Embedded Msg2 32 bytes
Embedded Msg3 32 bytes
Embedded Msg4 32 bytes
Msg Password Protect Msg
Emergency set Emergency Set
Stun Set Stun Inform
Stun Password Password Authentication
Mode Information Mode Select Password Authentication
Mode Password

9
Note:
When power-on password is enabled, you can enter User Mode only after inputting correct password.
And if data password is enabled, you can enter Dealer Mode only after inputting correct data password.
You can input password through the keypad and press [#] to clear.
3. User Set Mode
(1) Turn the power on while holding down [PF1], the radio enters User Set Mode after inputting correct
power-on password (if Power-On Password is set). The submenus are shown as follows:
Sub Menu Menu Item
1 Function Set
2 PowerOnText
3 PWR Password
4 UST Code
5 Hook & Moni
6 Key Assign
(2) Press [PF6] to enter the selected submenu.
(3) Adjust settings through the Selector Knob.
(4) Press [PF6] to save the change and enter the next item.
(5) Press [Up]/ [Down] to select your desired menu item.
(6) Press [PF1] to return to User Set Mode.
TEST &
ADJUST
MODE
Test Mode ---------------------------- While holding down [PF2]
key, turn on the power
ADJUST MODE ----------------------------
Model Set Mode ----------------------------
Firmware Version Display Mode ---------------------------- While holding down [PF3]
key, turn on the power
Firmware Down Load Mode ---------------------------- While holding down [PF4]
key, turn on the power
Wire Clone Mode ---------------------------- While holding down [PF5]
key, turn on the power
PC Mode ---------------------------- Receive commands from PC

10
Function Set
Select submenu “Function Set”, then press [PF6] to enter Function Set Mode.
No. Function Name Settings Display Remarks
1 Home Channel
Home Off Home Off
Home 1 On Home 1 On
Home 2 On Home 2 On
Home Both On Home Both On
Zone Home
Channel Home Zone
2 Home Channel 1 Zone 1 Selector Knob: change a zone/ch
Channel Home1 1 [PF5]: toggle between zone and ch
3 Home Channel
2
Zone 1 Selector Knob: change a zone/ch
Channel Home2 1 [PF5]: toggle between zone and ch
Power On Text
Select submenu “Power OnText”, press [PF6], the power-on text is displayed. Press [PF1] to edit the
power-on text.
Power On Password
Select submenu “PWR Password”, press [PF6], the power-on password is displayed. Press [PF1] to edit
the power-on password.
No. Function Name Settings Display Remarks
1Power On Password
None ------------
Refer to Appendix 1 “Character Input”
Max. 8 digits
Power on password 88888888
No. Function Name Settings Display Remarks
1
Power On Text None ------------------- Refer to Appendix 1 “Character
Input”
Max.12 characters
Power on text HYT MOBILE

11
UST Code
Select submenu “UST Code”, press [PF6] to enter UST Code Mode.
No. Function Name Settings Display Remarks
1UST Code No.
1-32 UST 1
UST 32
2UST Code Name
ASCII CODE Name
-------- No input
3
RX Signalling
OFF
R
Off
[PF5]: OFF/CTCSS/CDCSS
[PF4]: standard/step mode
[PF3]: CDCSS/ reverse CDCSS
CTCSS
(EIA standard)
67.0-254.1Hz
R
CTCSS 67.0
R
CTCSS 254.1
CTCSS
(0.1Hz step)
67.0-254.1Hz
R
CTCSS 67.0*
R
CTCSS 254.1*
CDCSS (standard)
023-754
R
CDCSS 023N
R
CDCSS 754N
CDCSS (1 step)
000-777
R
CDCSS 000N*
R
CDCSS 777N*
CDCSS (standard)
023-754 reverse
R
CDCSS 023I
R
CDCSS 754I
CDCSS (1step)
000-777 reverse
R
CDCSS 000I*
R
CDCSS 777I*

12
Hook & Moni
Select submenu “Hook & Moni”, press [PF6] to enter Hook & Moni Mode.
NO. Function Setting Display Remarks
1 Hook & Moni
Hook HandMic Hook Selected when hand
microphone is used
Moni TableMicMoni Selected when desktop
microphone is used
4 TX Signalling
OFF T
Off
[PF5]: Off/CTCSS/CDCSS
[PF4]: standard/step mode
[PF3]: CDCSS/ reverse CDCSS
CTCSS
(EIA standard)
67.0-254.1Hz
T
CTCSS 67.0
R
CTCSS 254.1
CTCSS
(0.1Hz step)
67.0-254.1Hz
T
CTCSS 67.0*
T
CTCSS 254.1*
CDCSS (standard)
023-754
T
CDCSS 023N
T
CDCSS 754N
CDCSS (1step)
000-777
T
CDCSS 000N*
T
CDCSS 777N*
CDCSS (standard)
023-754 reverse
T
CDCSS 023I
T
CDCSS 754I
CDCSS (1step)
000-777 reverse
T
CDCSS 000I*
T
CDCSS 777I*
5 END END END Display “END” indicating the
end of menu options

13
Key Assignment
Select submenu “Key Assign”, press [PF6] to program the programmable function key PF1-PF6.
No. Key Settings Display Remarks
1[PF1]
Off
1
PF1 Off None
VOL Up
2
PF1 VOL Up Volume up
VOL Down
3
PF1 VOL Down Volume down
CH Up
4
PF1 CH Up Channel up
CH Down
5
PF1 CH Down Channel down
Zone Up
6
PF1 Zone Up Zone up
Zone Down
7
PF1 Zone Down Zone down
MONI A
8
PF1 MoniA
MONI A:
Monitor Unmute-Momentary
MONI B
9
PF1 MoniB
MONI B:
Monitor Unmute-Toggle
MONI C [Default]
10
PF1 MoniC
MONI C:
Carrier Squelch-Momentary
MONI D
11
PF1 MoniD
MONI D:
Carrier Squelch-Toggle
Display Label
12
PF1 DLabel Display channel label
Display Frequency
13
PF1 DFreq Display frequency
Display Mode
14
PF1 DMode
Ch No./ch label/zone No./zone
label/RX Freq.
User Selectable Tone
15
PF1 UserTone Tone 01-32(CTCSS/CDCSS)
Sel 2Tone
16
PF1 Sel2Tone Select 2-Tone encode
Sel 5Tone
17
PF1 Sel5Tone Select 5-Tone encode
Sel HDC
18
PFI SelHDC
Tx Power
19
PF1 TxPower Switch TX power

14
1[PF1]
Scan
20
PF1 Scan Scan
Add/Del 21
PF1 Add/Del
Add/Del in non-scan mode
Nuisance channel temp.Del
Priority ch temp. del
Reverse
22
PF1 Reverse Reverse frequency
Talk Around
23
PF1 TA Talkaround
SEL SQL
24
PF1 SelSQL Select SQL
Home CH
25
PF1 HomeCH Home channel
Public Address
26
PF1 PA Public address
Horn Alert
27
PF1HornAlert Horn alert
LCD BackLight
28
PF1LCDLight LCD backlight
Scrambler
29
PF1 Scramble Scrambler
Compander
30
PF1 Compande Compander
AUX A
31
PF1 AUX A AUXA port output control
AUX B
32
PF1 AUX B AUXB port output control
Send GPS
33
PF1 Send GPS Send GPS
Emergency Call
34
PF1Emergency Emergency call
Message
35
PF1 Message Message

15
2[PF2]
Off
1
PF2 Off None
VOL Up
2
PF2 VOL Up Volume up
VOL Down
3
PF2 VOL Down Volume down
CH Up
4
PF2 CH Up Channel up
CH Down
5
PF2 CH Down Channel down
Zone Up
6
PF2 Zone Up Zone up
Zone Down
7
PF2 Zone Down Zone down
Moni A
8
PF2 MoniA MONI A
Moni B
9
PF2 MoniB MONI B
Moni C
10
PF2 MoniC MONI C
Moni D
11
PF2 MoniD MONI D
DisplayLabel
12
PF2 DLabel Display channel label
Display Frequency
13
PF2 DFreq Display frequency
DisplayMode [Default]
14
PF2 DMode
Ch No./ch label/zone No./zone
label/RX Freq.
User Selectable Tone
15
PF2 UserTone Tone 01-32(CTCSS/CDCSS)
Sel 2Tone
16
PF2 Sel2Tone Select 2-Tone encode
Sel 5Tone
17
PF2 Sel5Tone Select 5-Tone encode
Sel HDC
18
PF2 SelHDC
Tx Power
19
PF2 TxPower Switch TX power
Scan
20
PF2 Scan Scan
Add/Del 21
PF2 Add/Del
Add/Del as not in scan status
Nuisance channel temp.Del
Priority ch temp. del

16
2[PF2]
Reverse
22
PF2 Reverse Reverse frequency
Talk Around
23
PF2 TA Talkaround
Sel SQL
24
PF2 SelSQL Select SQL
Home CH
25
PF2 HomeCH Home channel
Public Address
26
PF2 PA Public address
Horn Alert
27
PF2Horn Alert Horn alert
LCD BackLight
28
PF2 LCD Light LCD backlight
Scramble
29
PF2 Scramble Scrambler
Compander
30
PF2 Compande Compander
AUX A
31
PF2 AUX A AUXA port output control
AUX B
32
PF2 AUX B AUXB port output control
Send GPS
33
PF2 Send GPS Send GPS
Emergency Call
34
PF2Emergency Emergency call
Message
35
PF2 Message Message
3[PF3]
Off
1
PF3 Off None
VOL Up
2
PF3 VOL Up Volume up
VOL Down
3
PF3 VOL Down Volume down
CH Up
4
PF3 CH Up Channel up
CH Down
5
PF3 CH Down Channel down
Zone Up
6
PF3 Zone Up Zone up
Zone Down
7
PF3 Zone Down Zone down

17
3[PF3]
Moni A
8
PF3 MoniA
MONI A:
Monitor Unmute-Momentary
Moni B
9
PF3 MoniB
MONI B:
Monitor Unmute-Toggle
Moni C
10
PF3 MoniC
MONI C:
Carrier Squelch-Momentary
Moni D
11
PF3 MoniD
MONI D:
Carrier Squelch-Toggle
Display Label
12
PF3 DLabel Display channel label
Display Frequency
13
PF3 DFreq Display frequency
Display Mode
14
PF3 DMode
Ch No./ch label/zone No./zone
label/RX Freq.
User Selectable Tone
15
PF3 UserTone Tone 01-32(CTCSS/CDCSS)
Sel 2Tone
16
PF3 Sel2Tone Select 2-Tone encode
Sel 5Tone
17
PF3 Sel5Tone Select 5-Tone encode
Sel HDC
18
PF3 SelHDC
Tx Power [Default]
19
PF3 TxPower Switch TX power
Scan
20
PF3 Scan Scan
Add/Del 21
PF3 Add/Del
Add/Del as not in scan status
Nuisance channel temp.Del
Priority ch temp. del
Reverse
22
PF3 Reverse Reverse frequency
Talk Around
23
PF3 TA Talkaround
Sel SQL
24
PF3 SelSQL Select SQL
Home CH
25
PF3 HomeCH Home channel
Public Address
26
PF3 PA Public address
Horn Alert
27
PF3Horn Alert Horn alert
LCD BackLight
28
PF3 LCD Light LCD backlight

18
3[PF3]
Scramble
29
PF3 Scramble Scrambler
Compander
30
PF3 Compande Compander
AUX A
31
PF3 AUX A AUXA port output control
AUX B
33
PF3 AUX B AUXB port output control
Send GPS
33
PF3 Send GPS Send GPS
Emergency Call
34
PF3Emergency Emergency call
Message
35
PF3 Message Message
4[PF4]
Off
1
PF4 Off None
VOL Up
2
PF4 VOL Up Volume up
VOL Down
3
PF4 VOL Down Volume down
CH Up
4
PF4 CH Up Channel up
CH Down
5
PF4 CH Down Channel down
Zone Up
6
PF4 Zone Up Zone up
Zone Down
7
PF4 Zone Down Zone down
Moni A
8
PF4 MoniA
MONI A:
Monitor Unmute-Momentary
Moni B
9
PF4 MoniB
MONI B:
Monitor Unmute-Toggle
Moni C
10
PF4 MoniC
MONI C:
Carrier Squelch-Momentary
Moni D
11
PF4 MoniD
MONI D:
Carrier Squelch-Toggle
DispayLabel
12
PF4 DLabel Display channel label
Display Frequency
13
PF4 DFreq Display frequency

19
4[PF4]
Display Mode
14
PF4 DMode
Ch No./ch label/zone No./zone
label/RX Freq.
User Selectable Tone
15
PF4 UserTone Tone 01-32(CTCSS/CDCSS)
Sel 2Tone
16
PF4 Sel2Tone Select 2-Tone encode
Sel 5Tone
17
PF4 Sel5Tone Select 5-Tone encode
Sel HDC
18
PF4 SelHDC
Tx Power
19
PF4 TxPower Switch TX power
Scan [Default]
20
PF4 Scan Scan
Add/Del 21
PF4 Add/Del
Add/Del as not in scan status
Nuisance channel temp.Del
Priority ch temp. del
Reverse
22
PF4 Reverse Reverse frequency
Talk Around
23
PF4 TA Talkaround
Sel SQL
24
PF4 SelSQL Select SQL
Home CH
25
PF4 HomeCH Home channel
Public Address
26
PF4 PA Public address
Horn Alert
27
PF4Horn Alert Horn alert
LCD BackLight
28
PF4 LCD Light LCD backlight
Scramble
29
PF4 Scramble Scrambler
Compander
30
PF4 Compande Compander
AUX A
31
PF4 AUX A AUXA port output control
AUX B
32
PF4 AUX B AUXB port output control
Send GPS
33
PF4 Send GPS Send GPS
Emergency Call
34
PF4Emergency Emergency call

20
5[PF5]
Message
35
PF4 Message Message
Off
1
PF5 Off None
VOL Up
2
PF5 VOL Up Volume up
VOL Down
3
PF5 VOL Down Volume down
CH Up
4
PF5 CH Up Channel up
CH Down
5
PF5 CH Down Channel down
Zone Up
6
PF5 Zone Up Zone up
Zone Down [Default]
7
PF5 Zone Down Zone down
Moni A
8
PF5 MoniA
MONI A:
Monitor Unmute-Momentary
Moni B
9
PF5 MoniB
MONI B:
Monitor Unmute-Toggle
Moni C
10
PF5 MoniC
MONI C:
Carrier Squelch-Momentary
Moni D
11
PF5 MoniD
MONI D:
Carrier Squelch-Toggle
Display Label
12
PF5 DLabel Display channel label
Display Frequency
13
PF5 DFreq Display frequency
Display Mode
14
PF5 DMode
Ch No./ch label/zone No./zone
label/RX Freq.
User Selectable Tone
15
PF5 UserTone Tone 01-32(CTCSS/CDCSS)
Sel 2Tone
16
PF5 Sel2Tone Select 2-Tone encode
Sel 5Tone
17
PF5 Sel5Tone Select 5-Tone encode
Sel HDC
18
PF5 SelHDC
Tx Power
19
PF5 TxPower Switch TX power
Scan
20
PF5 Scan Scan