The commands you seek are these:
Supported Models Information
LCD/LED TV LZ9800, LZ970*, LZ9700, LZ9600\nLW9600, LW950*, LW9500, LW770*, LW7700, LW7500, \nLW650*, LW6500, LW570*, LW5700, LW5600, LW550*, LW5500\nLV570*, LV5700,
LV550W, LV550T, LV5500(except size 26'', 22'', and Hong Kong), LV5400\nLV375*, LV373S, LV372S, LV3700\n\nNorth America Only \nLK550, LK530\n\n\n-
PDP TV\nKorea, Australia, New Zealand, Asia\nPZ950, PZ570\n\nCentral Asia\nPZ950\n\nNorth America\nPZ950, PZ750, PZ550, PZ540\n\nLatin America\nPZ950\nPZ570 (Brazil,
Peru, Chile Only)\n\nEurope\nPZ950, PZ750
key_code_power_on_off = 8
key_code_num_0 = 16
key_code_num_1 = 17
key_code_num_2 = 18
key_code_num_3 = 19
key_code_num_4 = 20
key_code_num_5 = 21
key_code_num_6 = 22
key_code_num_7 = 23
key_code_num_8 = 24
key_code_num_9 = 25
key_code_mute = 9
key_code_menu = 67
key_code_dash = 76
key_code_flashback = 26
key_code_chlist = 83
key_code_enter = 68
key_code_ch_up = 0
key_code_ch_down = 1
key_code_vol_up = 2
key_code_vol_down = 3
key_code_arrow_up = 64
key_code_arrow_down = 65
key_code_arrow_left = 7
key_code_arrow_right = 6
key_code_return = 40
key_code_exit_cancel = 91
key_code_confirm = 68
key_code_cursor_ok = 2
key_code_quick_menu = 69
key_code_red_button = 114
key_code_green_button = 113
key_code_yellow_button = 99
key_code_blue_button = 97
key_code_mm_live_tv = 158
key_code_mm_stop = 177
key_code_mm_play = 176
key_code_mm_pause = 186
key_code_mm_skip_backward = 143
key_code_mm_skip_forward = 142
key_code_mm_record = 189
key_code_epg = 169
key_code_energy_saving = 149
key_code_av_mode = 48
key_code_input = 11
key_code_fav = 30
key_code_simplink = 126
key_code_ratio = 121
key_code_info = 170
key_code_netcast = 89
key_code_guide = 169
key_code_subtitle = 57
key_code_teletext = 32
key_code_t_opt = 33
key_code_ad = 145